While reading an article this morning about hedge funds, mention was made of the US housing bubble that burst in 2008. And that led me to thinking about the AI bubble that may or may not be forming right now. So, of course, I turned to an LLM for more information (Chat GPT Plus, my favorite non-human reference librarian). We went from bubbles to data centers to railroad history (as one does). And since I found it interesting, I thought you might, also.