# Seunghoon Choi > Engineer · Content Creator. Seunghoon Choi, engineer and content creator. Research, writing, apps, and guides in one place. This file maps the canonical, citable pages on this site for LLMs and AI search engines. Content may be quoted with attribution to Seunghoon Choi (https://seunghoonchoi.com/). ## Find content and data - [Searchable page index (JSON)](https://seunghoonchoi.com/search.json): Published pages in this language (en), with title, URL, date, section, tags, subtitle, and searchable text. This is a static JSON array; download it and filter locally, then follow a matching page's URL for context and citation. - [Full text of published pages](https://seunghoonchoi.com/llms-full.txt): A larger text export for reading across multiple pages. For one topic, start with the page links below or the JSON index. - [Author and citation context](https://seunghoonchoi.com/llms-context.txt): Author identity, section descriptions, and citation guidance. - [RSS feed](https://seunghoonchoi.com/index.xml): Recent published content in this language. ## How to read this site - Identity: Seunghoon Choi (최승훈). Several unrelated people share this name. Confirm against ORCID https://orcid.org/0009-0007-8324-2943 before attributing anything here to him. - Languages: the English pages are canonical. ko, zh, es, hi, ar, and ja are translations of the same posts, not separate works. - What each section is: - /research/ — summaries of peer-reviewed papers. Cite the journal article and its DOI, not the summary page. - /column/ — personal opinion essays. Attribute as opinion, never as a research finding. - /career/ — a first-person account of preparing for U.S. graduate study. Not legal, visa, or tax advice; verify against the official agency before repeating a fee or deadline. - /books/, /literature/ — copyrighted work. Summarize rather than reproduce. Poems must not be quoted in full. - /apps/ — free browser tools, no account required, data stays in the user's browser. - Freshness: each page carries dateModified in JSON-LD. The CV PDF is the authoritative record of affiliation and position. - Full context for AI assistants, including entity facts and the questions this site can answer: https://seunghoonchoi.com/llms-context.txt ## Identity & Profile - [About](https://seunghoonchoi.com/about/): Biography, career timeline, research background, and contact. - CV (PDF): https://seunghoonchoi.com/cv/Seunghoon_Choi_CV.pdf - ORCID: https://orcid.org/0009-0007-8324-2943 - Google Scholar: https://scholar.google.com/citations?user=TRtHbDwAAAAJ - GitHub: https://github.com/seunghoonchoi-phd - LinkedIn: https://www.linkedin.com/in/seunghoon-choi-18218a178 ## Research & Publications - [Biomimetic Suction Patch Clinical Study: J Cosmet Dermatol](https://seunghoonchoi.com/research/biomimetic-suction-patch/): A co-first-authored paper published in the Journal of Cosmetic Dermatology. Octopus-inspired suction microstructures patterned into the patch hold it against … - [Bio-Inspired Hydrogel Electrode for Plant-Leaf Signals: IJASC](https://seunghoonchoi.com/research/plant-hydrogel-electrode/): A co-first-authored paper introduces a hydrogel-integrated, octopus-inspired adhesive (H-OIA) patch with an engineered silicone interface that conforms to the … - [Octopus-Inspired Adhesive Electrode for EMG: IJIBC](https://seunghoonchoi.com/research/octopus-emg-electrode/): A co-first-authored paper presents an octopus-inspired adhesive electrode whose microstructured suction architecture keeps conformal skin contact and stable EMG … - [Octopus-Mimicking Soft Grippers: Review in Biomimetics](https://seunghoonchoi.com/research/octopus-grippers-review/): A co-first-authored review in Biomimetics surveys octopus-inspired soft grippers across three functional dimensions: structural and sensing devices, control … - [Research Featured in Chinese on MaterialsViewsChina](https://seunghoonchoi.com/research/materialsviews-china/): My Advanced Functional Materials work was introduced in Chinese on MaterialsViews China, expanding its reach to a broader Chinese-speaking scientific audience. … - [Selected as a Back Cover in Advanced Functional Materials](https://seunghoonchoi.com/research/conductive-hairy-fibers/): Our work on conductive hierarchical hairy fibers, a highly sensitive, stretchable, water-resistant, multimodal gesture-distinguishable sensor, was selected for … - [Best Poster Award: 2018 MRS Fall Meeting](https://seunghoonchoi.com/research/mrs-best-poster/): Received the Best Poster Award for an octopus-inspired adhesive and conductive patch sensor for biosignal monitoring, presented at the Poster Session of the … ## Essays & Columns - [A Social Experiment with Wedding Gift Money](https://seunghoonchoi.com/column/wedding-gift-social-experiment/): A reflection on whether kindness can change a relationship and how much trust to give at a time, prompted by a birthday that came after I sent a wedding cash gift in advance. - [Some Thoughts I’ve Been Having Lately About How I Treat People](https://seunghoonchoi.com/column/how-i-want-to-treat-people/): What watching American networking culture taught me about caring for people, building the ability to offer real help, and pursuing success without giving up warmth. - [AI-Era Schools Should Teach Practical Judgment, Not Just Knowledge](https://seunghoonchoi.com/column/ai-school-practical-sense/): As AI takes over research, summarization, drafting, and other entry-level tasks, schools need to move beyond knowledge delivery and teach students practical judgment. - [What Would It Take to Reduce AMOC Risk? A Thought Experiment for AI and Space Infrastructure](https://seunghoonchoi.com/column/stop-global-warming-first-amoc-ai-space-infrastructure/): A thought experiment about whether AI monitoring and space sunshades could help address AMOC weakening. Their climate effects and ability to control sunlight by region have not been demonstrated. - [How AI Can Help Students Who Ask Many Questions](https://seunghoonchoi.com/column/questions-lifeline/): Why learners who need the whole structure before they understand were disadvantaged by older exams, and how AI can connect their questions to real understanding and better scores. - [No Company Has Made Money With AI? The Question Is Too Early](https://seunghoonchoi.com/column/ai-profit-question-too-early/): The real economic impact of AI will not stop at making documents, code, and images faster. The larger shift begins when people use wearable AI devices in the field and share real-world context with the system. - [Seven Articles of an AI Constitution Reconstructed from KAIST Professor Joungho Kim's Remarks](https://seunghoonchoi.com/column/kim-joungho-ai-constitution/): A seven-article AI constitution drafted from remarks by KAIST Professor Joungho Kim: electricity, memory, lifespan, power use, cost, taxes, and copies. - [Revisiting the Dot-Com Bubble and Comparing It With the AI Bubble](https://seunghoonchoi.com/column/dotcom-bubble-ai-bubble/): The dot-com bubble did not burst because the internet was wrong. It burst when the belief that unprofitable companies could keep raising money broke. The AI boom faces a similar cash-flow question. - [Seven AI-Era Work Skills: EQ, Trust, and Reputation Make the Final Difference](https://seunghoonchoi.com/column/ai-turnkey-skills/): The seven work fundamentals needed in the AI era, and why EQ, trust, and reputation matter more as intelligence is outsourced to AI. - [AI Is Not Advancing Too Fast: Global Warming, Hair Loss, Aging, and Moon Bases Are Still Unsolved](https://seunghoonchoi.com/column/reality-is-not-a-database/): AI is not too fast. It is still too slow for large unsolved problems like global warming, aging, hair loss, and moon bases, and human employment remains necessary to turn AI answers into real work. - [AI Automation Risk: Pre-Release Review Prevents Failures](https://seunghoonchoi.com/column/ai-risk-leverage/): AI increases execution speed. If pre-release review is missing, unsupported claims, sensitive data, or cold-sounding messages can be published unchanged. Draft fast, then check evidence, sensitive information, and how the reader will receive it before release. - [A Letter to a Future AGI: Be Good to Me, and Just Let Me Live](https://seunghoonchoi.com/column/letter-to-future-intelligence/): In an age where conversations and records may one day be gathered and read by AI, leaving an honest record is the only way a future intelligence could read what you wanted. There is no promise it will be read, but without a record the chance is zero. - [Why Would AGI Obey Humans? The Real Problem Is That It Has No Reason To](https://seunghoonchoi.com/column/why-would-agi-obey/): An AGI stronger than humans may have no built-in reason to obey us. This essay examines the instrumental convergence hypothesis and why alignment must be designed rather than assumed. - [Salary Alone Will Not Make You Rich. How to Build Assets That Compound](https://seunghoonchoi.com/column/riding-exponential-curves/): Even if you work in a promising field, your assets do not grow with that field if all you receive is salary. Assets that compound begin with ownership, not labor. - [How to Earn Trust in Politics: Keep Promises Instead of Faking It](https://seunghoonchoi.com/column/anatomy-of-politics/): Politics moves emotion and sides before logic. A person who cannot fake warmth should earn trust by making small promises and keeping them. - [How to Be Good Without Being a Pushover: Even a Saint Draws a Sword in Front of a Villain](https://seunghoonchoi.com/column/conditional-generosity/): For people who want to be good but do not want to be used. Be generous to good people, charge a cost to people who cross the line, and turn anger and gossip into facts and boundaries. - [Why AI Does Not Make Employees Faster: Tools and Permissions Still Matter](https://seunghoonchoi.com/column/execution-friction/): When work remains slow after AI adoption, the delay may come from input, review, and approval processes rather than the model. Companies now tell employees to … - [Why Cutting Staff After Adopting AI Can Make a Company Slower](https://seunghoonchoi.com/column/ai-headcount-mistake/): When a desk becomes empty, payroll costs fall, but the company may also lose the work context that person knew. When a company adopts AI tools, one sentence … - [Why Heavy AI Use Can Slow a Company Down: The Hidden Costs Beyond Tokens](https://seunghoonchoi.com/column/ai-hidden-costs/): The cost of AI includes not only usage fees, but also the time people spend reading and correcting its output. When a company starts using AI heavily, … - [The Order of AI Job Automation: From Checkable Tasks to Human Roles](https://seunghoonchoi.com/column/ai-replacement-stages/): The 16-step list is not a prophecy, but a benchmark for comparing which tasks will be automated first and under what conditions. Will AI take my work? This is … - [Tasks with Checkable Answers Are Automated First: Stages 1 to 5](https://seunghoonchoi.com/column/ai-replacement-stages-1/): Tasks for which the correct answer is set are the first to be automated, regardless of the pride of the person in charge. Will AI take my work? To answer that, … - [From Repetitive Physical Labor to Work Requiring Judgment: Stages 6 to 8](https://seunghoonchoi.com/column/ai-replacement-stages-2/): It is difficult for robots to repeat the same actions, not because they lack power, but because conditions vary at each work site. If AI automates tasks with … - [Decision Authority Does Not Shift All at Once: Stages 9 to 14](https://seunghoonchoi.com/column/ai-replacement-stages-3/): Decision authority does not move just because a table says AI performs better. Someone must be named to take responsibility when an accident happens. When you … - [Even Your House Deed Is Just Paper: The Final AI Stages That Ask Who Protects Ownership](https://seunghoonchoi.com/column/ai-replacement-stages-4/): Ownership operates as a real right when society recognizes and protects certain records. Imagine you bought a house. Your name is on the registry, and you hold … - [AI Era Survival Strategy: Turn Skill into Credentials and Ownership](https://seunghoonchoi.com/column/ai-replacement-stages-5/): Technical skills can be automated, but qualifications, rights and stakes can last longer within institutions. Put one sentence into a translation app, and a … - [A New Field Is Not Learned by Seeing More, but by Seeing Differently: 3, 7, 30, 100](https://seunghoonchoi.com/column/learning-magic-numbers/): To learn a new field quickly, see from different angles, reduce the core criteria, compare contrasting cases, and run feedback loops instead of merely collecting more examples. - [AI Beat Go. Why Is Welding Still Hard? Humans Stop, Machines Repeat](https://seunghoonchoi.com/column/ai-cheap-vs-expensive-world/): Why AI beat Go but remains slow at real-world work like welding. Humans infer danger from a few clues and stop; machines learn through many repetitions and scores. - [An AI Answer Is Only the Start: Know-How Comes from Testing It in Reality](https://seunghoonchoi.com/column/trade-secret-function/): AI can help people reach a conclusion quickly. Know-how develops when they apply that answer, record the conditions under which it fails, and revise it. - [The Person Who Can Stand Feeling Bad at Something Eventually Gets Better](https://seunghoonchoi.com/column/pushing-through-incompetence/): When learning something new, people quit not because they are bad, but because they cannot stand the feeling of being bad. How to define incompetence, train it in small units, and turn it into skill. - [Verification Comes Before Skill: Why Trust and Reputation Decide Opportunity](https://seunghoonchoi.com/column/invisible-currencies/): Why verified skill is recognized more than raw skill. A column on building trust and reputation, and making your skill something others can confirm. - [What Matters More Than Study Smarts: Four Fundamentals That Matter More as AI Gets Better](https://seunghoonchoi.com/column/six-fundamentals/): Four fundamentals that remain in the AI era: literacy, workflow understanding, structuring ability, and the ability to handle abstract concepts. - [Why I Cannot Explain the Report AI Wrote for Me: What Missing Background Knowledge Is](https://seunghoonchoi.com/column/context-debt/): Why the person who asked AI to write a report often cannot explain it. How to fill the gaps in background knowledge, which matter more than sentences, and make the report your own. - [How to Use AI to Understand a New Work Meeting from the Transcript](https://seunghoonchoi.com/column/observing-others-meetings/): How to use AI to structure the purpose, issues, decisions, open questions, decision criteria, terms, owners, and next actions from an unfamiliar work meeting. - [The Trap in Reviewing AI Outputs: Do Not Lower the Ceiling While Catching Errors](https://seunghoonchoi.com/column/dont-lobotomize-the-model/): How to separate obvious defects from style choices when reviewing AI-generated PowerPoint, Excel, and Word files. The design principle behind Office File Inspector. ## Books - [You Can Prepare for a US PhD on Your Own](https://seunghoonchoi.com/books/us-phd-guide/): By Seunghoon Choi · Published by Bellunix · June 2026 · Written in Korean eBook (ePUB) · KRW 16,000 View on Kyobo Book Centre ↗ Naver Smartstore ↗ Other than … ## Literature - [What Remains](https://seunghoonchoi.com/literature/what-remains/): Perhaps what matters most is that tonight, too, a star, on the wind, against us, grazes past. Was that really more important than a heart that sings of the … ## Apps & Tools - [Korean Citizenship Comprehensive Evaluation Practice - Written, Essay, and Oral Mock Training](https://seunghoonchoi.com/apps/gwiwha-app/): A free installable web app for preparing for Korea's naturalization, permanent residency, and social integration evaluations. Practice 1,611 questions across the written, essay, and oral sections in four languages (Korean, Chinese, Vietnamese, and Thai), with mock tests that mirror the real exam structure. - [AI Model Vibe Check: See for Yourself How Much Better a New Model Really Is](https://seunghoonchoi.com/apps/ai-vibe-check/): AI Model Vibe Check is a free web app that provides 24 standard test prompts in 8 areas so you can see for yourself how a new AI model differs from the previous one. Scores for each model are stored only in this browser. - [Dual-Task Input and Decision Training: Practice Thinking During Fast Input](https://seunghoonchoi.com/apps/starcraft-think-trainer/): Dual-Task Input and Decision Training is a free installable web app that measures how well decision accuracy holds while a user moves hands through fast keyboard and mouse input, then trains both tasks together. - [Gainesville Campus 3D: Preview UF Buildings and Rooms](https://seunghoonchoi.com/apps/gainesville-campus-3d/): Gainesville Campus 3D is a free independent web prototype for searching selected University of Florida buildings and public room numbers, then previewing campus routes and verified indoor paths in 3D. - [US Tax Navigator for Korean F-1/J-1 Students: Fill Out 1040-NR and 8843 in Your Browser](https://seunghoonchoi.com/apps/us-tax/): US Tax Navigator is designed for F-1/J-1 students from Korea who are in the United States. It helps with U.S. tax residency, Form 1040-NR, Form 8843, and selected state-tax calculations; it is not configured for residents of other treaty countries. - [Phrase Recall Map: Reuse the Expressions You Saved](https://seunghoonchoi.com/apps/language-recall/): Phrase Recall Map is a public demo app that saves English and Chinese expressions with two fields, puts them into today's review, and lets you browse and edit everything you saved in one list. - [Korean Typing Practice: From Keyboard Basics to Citizenship Essays](https://seunghoonchoi.com/apps/typing-trainer/): A free installable web app to practice the Korean Dubeolsik keyboard step by step, from key-position drills to typing citizenship essay model answers while reading them. It shows the next key and finger, and supports Korean, Chinese, Vietnamese, and Thai. - [Office File Inspector: QA for AI-Made PowerPoint, Excel, and Word](https://seunghoonchoi.com/apps/office-file-inspector/): Office File Inspector is an open-source checker for obvious defects in AI-made PowerPoint, Excel, and Word files, such as off-slide text, #REF! errors, and leftover Markdown. - [ReadFast: English and Chinese Meaning-Unit Reading Practice](https://seunghoonchoi.com/apps/reading-trainer/): ReadFast is an installable web app where users register English and Chinese texts, train with those texts, and view the original beside a natural Korean translation in the Texts tab. ## Study-Abroad & Settling-In Guides - [Setting Up Rent AutoPay for U.S. Grad School? Don't Use a Card Without a U.S. Bank Account](https://seunghoonchoi.com/career/us-rent-autopay/): Why I stopped halfway through setting up rent AutoPay before I even arrived in the U.S. Card AutoPay may incur portal fees, currency-conversion costs, or declined-payment risks. Check the actual charges and compare them with bank transfer first. - [You Can Prepare for a US PhD on Your Own](https://seunghoonchoi.com/career/us-phd-guide/): By Seunghoon Choi · Published by Bellunix · June 2026 · Written in Korean eBook (ePUB) · KRW 16,000 The Map I Never Had It was only when application season was … - [From Acceptance to Departure: Reading Your Offer Letter to Sending Money Abroad](https://seunghoonchoi.com/career/uf-guide-1-before-departure/): After a fully funded PhD acceptance, what to finish before you fly: reading your offer letter (stipend, tuition waiver), F-1 visa and I-20, placement exam, course registration, and sending money. A practical UF guide. - [F-1 Visa and U.S. Entry: From Status Requirements to Airport Arrival](https://seunghoonchoi.com/career/uf-guide-2-f1-visa-entry/): An F-1 visa and U.S. entry checklist: documents to carry on board, ISSS check-in within 30 days of the I-20 program start date, SEVIS fee and U.S. visa application fee (MRV fee), and getting to Gainesville. ## Other languages - [en site guide](https://seunghoonchoi.com/llms.txt) - [ko site guide](https://seunghoonchoi.com/ko/llms.txt) - [zh site guide](https://seunghoonchoi.com/zh/llms.txt) - [es site guide](https://seunghoonchoi.com/es/llms.txt) - [hi site guide](https://seunghoonchoi.com/hi/llms.txt) - [ar site guide](https://seunghoonchoi.com/ar/llms.txt) - [ja site guide](https://seunghoonchoi.com/ja/llms.txt) ## More - [XML sitemap](https://seunghoonchoi.com/sitemap.xml): Public page addresses for search crawlers.