This is the unknown which is being discussed by the scientists which support this theory. And, it's not just the scientists. If you listen to the audio in the link I provided in my second post in this thread, one of the primary people who started this discussion back in the early '90's was a structural engineer. I'm not an academic, I'm a layman in the field research of animals and their environments. But I somehow felt that dinos in today's gravity, just didn't make sense.
A lot of questions come to mind based on some of what we already accept (yet sometimes still challenge):
1. If the entire universe is expanding, why would our solar system itself be static and not part of this expansion?
2. If heat expands, why would the earth not expand if it had a molten core, even though it's surface has cooled over time?
3. If the sun is itself expanding, could it be possible that our planet is gradually moving away from the sun as an adjustment and/or part of the expansion?
4. If our moon is moving slightly away from the earth at a constant rate. Isn't this a possible adjustment relative to the earth's expansion?
I do see a conflict if you accept the Big Bang Theory, but see our solar system as static within it's bounds.