Bubbles can only be called after they burst. From my perspective, there's no reason the fiscal or monetary policy can't continue this further. On the other hand

Bubbles can only be called after they burst. From my perspective, there's no reason the fiscal or monetary policy can't continue this further. On the other hand (note: sample bias) I see a growing number of rational investors raising these concerns. Not that one guy shouting that tomorrow is the start of the next recession for the 80th time, but ordinarily quiet buy-and-hold investors.