Comments by "" (@adambickford8720) on "TDD Isn't Hard, It's Something Else..." video.

  1. It's very subtle. In the 'bad' example he's using the implementation by looking at the `.length` property of the backing field vs the `length()` method. Same with the 'get' example: in the 'bad' case he's directly accessing the array via index instead of the public api i.e. the `get(i)` method. Technically a `StringList` doesn't have to be backed by an array, even if it's the obvious implementation. However, if you couple to the array it will break when evolving.
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