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It’s Easy to Get Drunk on New Ideas. Don’t Overlook Execution

July 12, 2016, 12:30 PM UTC
CONTEMPLATING ARTIFICIAL INTELLIGENCE David Kenny, General Manager, IBM Watson David Mindell, Professor, MIT; Co-founder and CEO, Humantics Shivon Zilis, Partner, Bloomberg Beta Moderator: Adam Lashinsky, Fortune

This essay originally appeared in Data Sheet, Fortune’s daily tech newsletter. Sign up here.

Greetings from Aspen, Colo., where the weather is beautiful, the altitude means one glass of wine may as well be four, and the attendees of Fortune’s 15th annual Brainstorm Tech conference spent their first day soaking up new ideas from a variety of tech luminaries.

Dropbox CEO Drew Houston dissed Box. A panel of artificial intelligence experts declared that “data is the new oil.” General Motors’ (GM) president explained how he thinks self-driving cars will become a reality. Lyft’s president discussed the company’s financials. WeWork’s CEO talked up that he’s not afraid to take the coworking office startup public.

Read all of our coverage, and tune in to today’s livestream.

One thing that struck a chord with me was an investor discussion about how Theranos happened. They issued a warning: What happened at the blood testing company is not an isolated situation.

“People are not doing their diligence in this sellers’ market,” said David Trujillo, a partner at investment firm TPG. “Companies don’t have to share quite as much as they would outside of the bubble we’ve been in.” What’s worse, they manufacture attractive figures to put into their pitch decks and make it difficult to dig deeper into the numbers, he said.

The ripple effect of Theranos:

Bill Maris, CEO of GV (formerly Google Ventures), noted that Theranos didn’t have data or peer-reviewed journals to prove its technology works. “This is what happens when people invest in the idea and not the execution.”

The takeaway: No matter the altitude, don’t get drunk on ideas.