There is some cool stuff in there: fun lore to riff of that is placed in a very relaxed toolbox presentation, lots of solid game prep material (lots of tools to help make each dragon type more distinctive, and each individual dragon NPC more unique), and cool monsters. I've liked Volo's and Mordenkainen's, but Fizban's is the best monster book by a fair margin in my estimation.
There are really two varieties that emerge in the early modern period. "Caloric" used by chemists to try and explain heat, and "luminiferous aether" used by Physicists as a medium in which light waves could propagate.
I mean, Aristotle came up with neither of those, to be fair. Good for nutrition advice and discussions on how to be a good friend, though.
No, and I expect he would have been horrified had he realised how much weight future generations would assign to his musings on the nature of the universe.
I just want to point out that the observable universe is not the entirety of our universe. Whether or not the universe is finite or infinite beyond what we can see is unknown.
Yes, I was going on memory and then I actually read the wiki I posted!
That's why I said possibly bounded, possibly infinite
That...mathematically known to ne untrue. That's qn idea about as scientific as the Phlogiston.
Interesting. Do you have any more details?
There's a reason there's a distinction between 'observable universe' and 'universe'.
