Spoken like someone who has never had a surprise maintenance issue pop up unexpectedly that costs multiple times your monthly mortgage.

We aren’t mind readers. If you think we are wrong, explain why. You can call an attempt at defining your poor communication a strawman, but it only shields your ideas from the test of debate.

That’s no strawman. You just refuse to see that there is no universal way to decide upon value that fits everyone’s notion of it. If both people in an exchange come away satisfied, did one exploit the other? How do you strictly define the excess value on each side of the transaction? Your idea of a profit-less society doesn’t consider how we’d pragmatically exchange our labor to achieve that.

Charity.

I think I should have said “optic” in place of “lens”. The crystal is the portion that is being oscillated to divert the beam. It could be that this is exactly the same principle being used by the referenced experiment but with much higher powered acoustic equipment.

Doesn’t an AOM typically have a lens?

Revit is a pretty commonly used architectural tool now.