Absolutely untrue in the US. You need an FAA repairman card or your A&P license both of which allow you access to high paying jobs. The fact that you need the certificate makes this skilled by definition.

I’ve had exactly the opposite experience. They respond quickly to tell me that nothing will change and I need to live with it.

Stratasys’ J850 totally has this capability. Full color printing with variable durometer elastomers.

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.