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- 한국어 질문 및 피드백
- Feedback on my essays (math and physics)
- Feedback on “Moving Beyond the Korean System: On Learning To Love Mathematics and Physics”
- Feedback on “Surprises in math, the reason why I study physics, and a recommendation for ‘The Number Devil’”
- Feedback on “Is math and science homework mechanical drudgery?”
- Feedback on “The mathematical beauty of physics”
- Feedback on “English as a foreign language versus English as a mother tongue: an analogy for the language of mathematics and the language of physics”
- Feedback on “Physics solutions for mathematical problems”
- Feedback on “Are memorizing formulas well and good arithmetic skills essential to become a good theoretical physicist or a good mathematician?’’

- Feedback on my essays (math)
- Feedback on my essays (math history)
- Feedback on my essays (physics)
- Feedback on “Studying physics as resolving paradoxes”
- Feedback on “The similarity between painting and theoretical physics, and a recommendation for ‘The Evolution of Physics’”
- Feedback on “Fermat’s principle and the consistency of physics”
- Feedback on “Did Einstein really prove that Newton was wrong?”
- Feedback on “Cosmological principle, and my view on philosophy”

- Feedback on the articles for laymen
- Feedback on "Theory of Everything"
- Feedback on "Chemistry"
- Feedback on "Some basic mathematics and statistics, the 1st part"
- Feedback on "Basic high school physics without mathematics, the 1st part"
- Feedback on "Trigonometric functions"
- Feedback on "Historical Introduction to Quantum Mechanics, the 1st part"
- Feedback on "Some prerequisites for Astronomy"
- Feedback on "Astronomy"
- Feedback on "Bosons and Fermions"
- Feedback on "Black hole" and "Newton's inverse square law of gravity"
- Feedback on "Some basic mathematics and statistics, the 2nd part"
- Feedback on "Energy and Entropy"
- Feedback on "Loop Quantum Gravity"
- Feedback on "Basic high school physics without calculus, the 2nd part"
- Feedback on "Complex numbers"
- Feedback on "Electricity and Magnetism, the 1st, the 2nd, and the 3rd parts"
- Feedback on "Special Relativity" and "Paradoxes in Special Relativity"
- Feedback on "Modified Newtonian Dynamics"
- Feedback on "Dimensional analysis, the 1st and the 2nd parts"
- Feedback on "CPT" and "Neutrino oscillation"
- Feedback on "Wave"
- Feedback on "A Crash Course in Calculus, the 1st and the 2nd parts"
- Feedback on "Applications of Calculus, the first part"
- Feedback on "The products of vectors" and "A Crash Course in Calculus, the third part"
- Feedback on "Some basic ideas in General Relativity"
- Feedback on "Mathematical Introduction to Physics"
- Feedback on "Electrodynamics"
- Feedback on "Historical Introduction to Quantum Mechanics, the 2nd part"
- Feedback on "Enumerative geometry"
- Other feedbacks on the articles for laymen

- Feedback on the articles for mathematically oriented high school students and students learning calculus
- Feedback on "Approximation of the naive black hole degeneracy"
- Feedback on "Planet's motion around the Sun"
- Feedback on "Lagrangian formulation of classical mechanics"
- Feedback on "Linear Algebra and Quantum Mechanics"
- Feedback on "Thermodynamics"
- Feedback on "Hamiltonian formulation of classical mechanics"
- Feedback on "Transition from Classical Mechanics to Quantum Mechanics"
- Feedback on "Further Linear Algebra"
- Feedback on "Theory of Special Relativity and 4-vector"
- Feedback on "Subtleties in Quantum Mechanics"
- Feedback on "A Crash Course in Calculus, the fourth part" and "Applications of Calculus, the second part"
- Feedback on "Evidence of the rotation of the Earth" and "Application of the Lagrangian Formulation of Classical Mechanics"
- Feedback on "Angular momentum in Quantum Mechanics"
- Feedback on "Feynman diagrams" and "More differential equations"
- Feedback on "Maxwell's equations"
- Feedback on "Differential forms and their applications"
- Feedback on "Statistical Mechanics"
- Feedback on "Loop quantum gravity approach to black hole"
- Feedback on "The Basic Cosmology, part 1"
- Feedback on "Complex analysis"
- Feedback on "Further electrodynamics"
- Feedback on "Further quantum mechanics"
- Feedback on "Further statistical mechanics"
- Other feedbacks on the articles for mathematically oriented high school students

- Other feedbacks