Couldn't sleep this morning, so at 6am I tried to tackle the bug that gave me a hard time yesterday... at 10am I found the bug, and so I remembered the number one rule when coding.

KISS? Nope.

The number one rule is that your past self is dumb and he probably created the bug in the easy part of the code... you know, the one you didn't even check because of-course-the-bug-cannot-be-there-Im-not-stupid.