miniblog.

The existence of a null value isn't a billion dollar mistake. The issue is when static type systems allow null anywhere. Even some dynamic languages don't have a null value. For example, some lisps only have the empty list, which they use as a null-like value by convention.

"GitHub makes it easier for large, loosely coordinated groups of programmers—in corporations, for instance—to use git. It has a well-designed web interface. If you don’t think that’s worth $7.5 billion, you’ve never read the git manual."

There are Only Four Billion Floats–So Test Them All! https://randomascii.wordpress.com/2014/01/27/theres-only-four-billion-floatsso-test-them-all/ (exhaustive testing can prove absence of bugs!)