[calibraxis]

Interesting point, since personally in my experience, lambda calculus is overly held up as useful to learn. While simple models are very useful, it has a geek culture/hierarchy aspect too. (http://en.wikipedia.org/wiki/Knights_of_the_Lambda_Calculus)

In explaining things, I find it very important to deflate intimidating-sounding jargon; and discover for oneself if something really is important, or whether it has more of a dysfunctional social purpose like mystery-of-the-priesthood for initiates.