EpiMath

Thanks! I didn't know this one either.

wow. thank you.

Also Edgar Anderson's "Plants, Man, and Life" on a similar theme.

I'm not very sure about the vinegar + steal wool part... that makes ferrous acetate pretty quickly, and what we want here is a ferro-gallate. I think there are ways of producing ferro-gallate inks without using sulfates, but historically ferrous sulfate was commonly used ( and leads to paper being eaten away over time )

that's a pretty fun read.

Mint :(

Excellent comment. I'm one of those people who always thought: "I can't draw". Now I understand that for me it is a matter of practice. I started with Drawing on the Right Side of the Brain.

This book is not really addressing the more common "is math real" question of it being empirical or invented. For an interesting take on that question, see the 1st section of the 2nd part of Daniel Shanks' Solved and Unsolved Problems in Number Theory. He makes some interesting points about the old Pythagorean views

$62 to access the paper

This could be a big deal if the new vaccines work well, especially if they work well in older people. Hope for the best.

I don't disagree with you, but this is a horribly sad comment. I worry that the text of papers often gives short shrift to nuance and subtlety that is necessary for reasonable interpretation.

Thanks! Did not know about this and now it is on my list of places to visit.

I've also been roasting coffee from Sweet Maria's for many years, and the thing that's useful is that I learned how Tom will describe flavors that I like. So, whether he calls it "hazelnut" or "almond" doesn't matter, but when he says "hazelnut" there is a flavor I enjoy that isn't there when he writes "almond"... and some other things like when he writes 'crowd pleasing" there is likely to be a lot of balance... over time the descriptions have become more and more useful to me!