SO WHAT IF IT'S A BUBBLE?

Summary from the TLDR Founders newsletter

Bubble dynamics don't matter to most founders because we all live in today's market and not in the future. Founders who have the ability to take advantage of the market should do so as long as it benefits their companies. If money is plentiful, you should probably take it - if the bubble bursts, the money will probably be useful. Great founders live in the kind of long term that radically reduces the impact of individual bubbles.