might the depth of underlayments
surpass the weight of what I weigh
and hold  me while I float and give
I the particle
boards be sufficient OSB be
a true foundation
with the patched seams a veneer
above the under cores
enough to hold unless it is braced and sturdy
well engineered
thought out thoroughly a felt
under hardwoods is utterly a fail-safe
finish useless
as I
see.
A gimmick.