Since Inauguration Day, President Donald Trump has been moving quickly.
According to Mark Cuban, billionaire investor, star of ABC's "Shark Tank" and owner of the Dallas mavericks, that calls into question Trump's skill as a manager.
In particular, Cuban says that Trump's travel ban, dropped late on Friday night, was a blunder.
"It's horrible! Look, let's just be real clear. The ban was half-a--ed and half-baked," says Cuban, speaking to CNN's Erin Burnett.
"If the goal was security, why do you leave off any other countries that hosted terrorism? That's like locking your front door and leaving all your windows open."
The executive order indefinitely bars Syrian refugees from entering the country, suspends all refugee admissions for 120 days and blocks citizens of seven majority-Muslim countries — Iraq, Syria, Iran, Sudan, Libya, Somalia and Yemen — from entering the country for 90 days.
That Trump signed the order before carefully considering the consequences was, Cuban says, a red flag.
"It was half-baked, it wasn't thought out, it was rushed and it was ridiculous," says Cuban. "And when something like that happens it calls into question the management skills of the guy in charge."
Cuban would have liked to see Trump wait to take such drastic measures until he had his full Cabinet in place and was able to have a team of experts put forward the plans.
"He did the exact opposite," says Cuban. "And so now, every time there is an executive order, you have to ask yourself where did it come from. Who did the work? How was it vetted? Do we have to question it further?"
Also, Trump should be listening to his opposition, says Cuban.
It was half-baked, it wasn't thought out, it was rushed and it was ridiculous.Mark Cubanowner of Dallas Mavericks
"In my mind, a good leader would say, 'OK, I need to sit down and talk to the guys who oppose me. Let me let them voice their opinions, let me get their thought process.'"
But Cuban says that Trump's momentum is driving him to go even faster.
"The Donald Trump I know, when he gets confidence, he's confident. And when he is confident he works based off his instincts and so I think that's what's happening."
Correction: Trump signed an executive order for a travel ban on Friday. An earlier version mischaracterized the action.
— CNBC's Jacob Pramuk contributed to this story.
Disclosure: CNBC owns the exclusive off-network cable rights to "Shark Tank," which features Mark Cuban as a judge.