Sometimes people we don’t like are right and sometimes they aren’t.

I am ok with that, really. So, rather than saying, in words, “If I have 12 dollars and Alice gave me 5 dollars then I can take the difference to find out how much Bob gave me” you can simply do some standard manipulation of the equation and come up with: b = x – a (which is much shorter and applies no matter what the amounts of money are).As for e=mc2, you are right: e is energy and [...]

Read more...