Tracking sales of pin-pong tables might be a better indicator. [1] Also during dotcom bubble somone people used number of Porche Boxters in the street. These d

Tracking sales of pin-pong tables might be a better indicator. [1] Also during dotcom bubble somone people used number of Porche Boxters in the street. These days it might be a different model, such as Tesla. [1] https://qz.com/676050/if-ping-pong-table-sales-are-falling-then-silicon-valley-is-clearly-doomed/ https://qz.com/676050/if-ping-pong-table-sales-are-falling-t...