An Intuitive Derivation of Eigenvectors
really good explanation.
I like it even better than 3blue1brown or visualisations that I had seen.It is better because it really covers every step of the construction process.And offers explanation of why certain thing are not the right construction blocks. The author gives a visual example, for example, of why basic vectors 1,0 -1,0   are bad.  The article shows they cannot span the whole space.Those kinds of explanations of 'bad constructions' are difficult to show in visualizations, that show 'good' constructions only.But, yet, in my view, these negative examples,  are really helpful to explain the material that otherwise, requires 'intuition'.Not everybody  has same intuition, so showing negative examples/impossible constructions, and why those do not work -- is a good way tuning one's intuition.---On a separate note, I am wondering if such good step by step + counter examples, knowledge presentation -- is a result of author studying at MIT, or a natural trait (or both) ?