parameter set returned from BasePhysics returns in alphabetical order

This makes it a bit hard to use, as users are wanting to pass parameters back in using the order specified in the functional constructor argument order. We may just need to define the < operator to sort by index order, not name.

Start by locating BasePhysics and the code that orders or compares its returned parameter set. Check how functional-constructor argument positions are represented, then verify that the returned parameters follow that order rather than alphabetical order.

Written by the indexing model from the issue text.