Latent Semantic Indexing and benefits of LSI keywords for SEO

'The web swarms with misconceptions about LSI keywords, and here I am to add a couple of mines...' I felt like starting it this way but collected myself and pulled out the remnants of maths from high school classes to write this.

I hate discrimination 'humanities vs maths & sciences'.
First of all, languages, maths, and music are all about the same thing, those who read Hesse know it.
Secondly, the maths party who says "you can't just open a copy of 'Intro to Quantum Mechanics' and expect to understand everything, physically and mathematically"... Do you think when you open 'The Glass Beads Game', you will understand it, literally and figuratively?

Without further ado, here is my brief overview of LSI and some tools for language analysis (and for SEO in particular, since SEO has been my major for a couple of years).

https://www.link-assistant.com/news/lsi-keywords.html

Now it seems I've got a new hobby of listening to lectures on 'maths for humanities scholars'. I would be glad to find a few good resources helping to understand maths (not simply study, but understand it intuitively).