I've read in a physics journalist about Coanda effect, and why Bernouli effect couldn't the be only reason, if it was, then it would be possible to make levitat

I've read in a physics journalist about Coanda effect, and why Bernouli effect couldn't the be only reason, if it was, then it would be possible to make levitating boxes just stuff a fan and a wing in a box and supply enough electricity for the Bernouli effect to raise the box.