You don't believe in sudden changes, because the scientific models are virtually static and not dynamic.
Oh my. The display of such ignorance by a Creationist on how scientific models are constructed, implemented, and yes,
revised, is no real surprise anymore, but the hubris required to state such nonsense never ceases to amaze me.
If science was indeed static, it would never progress and we'd all still be in the stone age. You should take a little time to think about what you're professing.