You think you really need that shiny new MacBook Pro?Deborah Sullavan Archives Well, if Jack Dorsey can run Twitter and Square -- both multi-billion-dollar companies -- without a computer, laptop or a tablet, then you probably don't need one, either.

So how was this incredible fact discovered? Well, Dorsey's tweets do typically seem like they're all posted from a mobile phone. So Quartz reporter Dave Gershgorn straight up asked Dorsey whether he uses a computer or a laptop, to which Dorsey simply replied "no."

This Tweet is currently unavailable. It might be loading or has been removed.

Later in the thread, Dorsey was asked whether he at least uses a tablet, but the answer was, again, negative.

This Tweet is currently unavailable. It might be loading or has been removed.

And a desperate attempt by Microsoft's Paul Fabretti to get Dorsey to start using a Surface Go was met with a cruel, blank stare by Dorsey (or at least that's how we imagine him looking at his phone).

This Tweet is currently unavailable. It might be loading or has been removed.

Everyone's job and routine is different. If I had to type this text on an iPhone I wouldn't be too happy about it. But it's still impressive that someone who runs two major tech companies can do it without using a computer -- well, according to him, anyway.

UPDATE: Oct. 12, 2018, 9:36 a.m. CEST This was not the first time Dorsey said he doesn't use a computer. The tablet thing is new, though.