For my information

I have discovered that USPS media mail is dirt cheap, and if you do include some writing, such as a greeting card, and you confess to it, all you have to do is add 46 cents (first class postage), and they won't tear it open to look, as the sign on the wall threatens.  I don't want to think about what happens if the parcel contains even more, but $13 was outrageous and more than the cost of the contents.  Of course, that may only occur in our pleasant little town.

I JUST CAME ACROSS the word gedankenexperiment (1941) which is defined by Merriam-Webster as "an experiment carried out in thought only."   Isn't that what most "science" is?