Board Thread:General Discussion/@comment-27009891-20151118193542/@comment-995426-20151119001741

Ahh, I remember when I tried to come up with fanonical scientific hypotheses to help explain the events of this show. :) One of my theories was that the events of the first two and a half seasons happened in only several months, to account for the turtles still being 15 in season 3. But then the end of season 3 had to ruin that by confirming that 1 season = 1 year in-universe.

Sometimes a plot hole is just a plot hole. Though it might have been nice if the show at least tried to explain the discrepancy.