Abstract: Variables.
This is an article on variables. The variable is Anthony's favourite data structure, because he can put things in it. In light of this, see the following html and haskell code.
<html><img src="foo.png">foo</img></html>
foo 0 = 1 foo 1 = 1 foo n = (foo - 1) + (foo - 2)
Which perfectly explains my point.
