It can be hard to see a bubble when you’re smack-dab in the middle of it. I think that describes our situation today. Let’s look at a few large tech stocks’ price-to-earnings (P/E) ratios.  Amazon: 115 Tesla: 918 Zoom: 522 These valuations are worrying. Yes, these companies have historically shown high growth. But at these kinds of levels, valuations are starting to get…