Perhaps it's not surprising that entrepreneur/futurist Elon Musk and Google CEO Larry Page are fast friends.
The two men, as Mashable notes, are similar in age, demeanor and otherworldly ambition.
The nerd bros have tons of overlapping interests, so much so that they enjoy getting together with Google co-founder Sergey Brin at a "secret apartment" owned by his company to bat around reality-altering ideas, according to "Elon Musk: Tesla, SpaceX, and the Quest for a Fantastic Future," a new authorized biography written by Ashlee Vance.
For example: The tech wizards have discussed building a commuter plane that continually circles the globe for fast transport.
Musk, as Page tells the biographer, even crashes at the executive's home when he's in San Francisco.
There's just one nagging problem between the two men. Nothing serious, though, just a little tiff between old buds about the future of the universe, really.
Musk thinks Page may be "building a fleet of artificial-intelligence-enhanced robots capable of destroying mankind," according to the book.
Then again, who doesn't have a friend with apocalyptic tendencies, right?
Besides, it's not like Page is doing it on purpose. Musk thinks his buddy is "fundamentally a well-intentioned person and not Dr. Evil," the book notes. But it's Page's "nice-guy nature" that has his friend sweating bullets as he lays in bed at night.
"I'm really worried about this," Musk is quoted as saying.
"He could produce something evil by accident," he adds.
Admittedly, the whole thing is a bit awkward. These guys aren't just friends — they're friends with some serious benefits.
And Page, according to an "Elon Musk" excerpt published by Bloomberg, nearly bailed Tesla out in 2013 when the company was veering towards bankruptcy. When sales suddenly improved, Musk eventually walked away from the $11 billion deal for Google to acquire the electric car company, which would've been the second-largest in Google history, according to Mashable.
Though his friend worries that he may be bringing about the end of mankind, Page told Vance the feeling is not mutual. He is quoted as saying he finds Musk "inspiring" because of his willingness to invest time and money in companies that aim to solve some of humanity's greatest challenges.
Musk, meanwhile, has been warning about the dangers of artificial intelligence for months.
As far as AI-fearing technologists go, Musk is far from alone. In recent months, Bill Gates, Stephen Hawking and Steve Wozniak have all sounded the alarm on the dangers of AI.