The Brooks Review:

Android releases are done alphabetically, which is dumb. Why is it dumb? Industry standard is numbers because numbers make sense.

I’m not sure Android’s way is dumb per se, but it sure is yet another example of engineer thinking (this is logical to me, therefore let’s do it) versus thinking for the typical consumer (where numbers do indeed rule, and version 5.4.3 is clearly more recent than 2.5.1).