I don't entirely know what to make of a very-small number of companies' valuations going sky-high that fast (and a few completely without any apparent connection to the fundamentals or even the best-plausible-case mid-term future of those fundamentals, like Tesla) but I can't help but think it means something is extremely broken in the economy, and it's not going to end well.

Maybe we all should have been a little more pro-actively freaked out when dividends went from standard to all-but extinct, and nobody in the investor class seemed to mind... like, it seems that the balance between "owning things that directly make money through productive activity" and "owning things that I expect to go up in value" has gotten completely out-of-wack in favor of the latter.