Tim Daneliuk wrote:
....

What I should have said is: "Science as currently constituted with
its present first propositions."

That's the problem...you have it backwards. As noted above, science
works backwards to find out from observation what _is_ a workable "first
proposition" that leads to a coherent explanation of "what is".

Whatever that turns out to be will be whatever it turns out to be...and
will undoubtedly continue to be modified for the forseeable future as
science continues to progress.