Great entrepreneurs are willing to being wrong.

Nobody likes to be wrong. But for a startup CEO, being willing to test your assumptions can be the difference between success and failure.

“It ain’t what you don’t know that gets you into trouble. It’s what you know for sure that just ain’t so”. — Mark Twain

I’m a Silicon Valley guy. I teach entrepreneurship at Stanford, coach startup CEO’s at Miller Center, and run the 4thly Startup Accelerator. Also, I love tacos.

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