Key Words: Elon Musk is ‘super, super serious’ about taking on Warren Buffett

Elon Musk blasted one of Warren Buffett’s primary investing tenets earlier this week when he said during his Tesla TSLA, +3.39%analyst call that “moats are lame” and “if your only defense against invading armies is a moat, you will not last long.”

The classic definition of a moat is, of course, a body of water protecting a castle. In Buffett terms, it’s the advantage certain companies hold over the competition due to by having a powerful brand that creates high barriers to entry.

Buffett obviously doesn’t think moats are lame. After all, he’s made an absolute fortune by investing in them.

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