The gist of the post: programming is not like the algebra that most people are familiar with: the elementary algebra they learned as teenagers. Was it TL;DR for you?We agree that programming is actually like math, especially in lambda calculus. However, as this post is about deficiencies in how beginner topics are taught it is directed at people for whom a little differentiation would help.So while your technical assertion is correct, this is not the place to post it. Furthermore, your condescending and combative tone is inappropriate. Normally I would move such comments into the trash. Yours was allowed solely as an example of the kind of comment which should be discouraged.