Tech's Longest-Running Hoax

An investor channel reports: Quantum Computing: Tech's Longest-Running Hoax

you may need 14:12 hundreds or even thousands of physical 14:14 cubits in each logical Cubit the point 14:17 is if you want to make a quantum 14:18 computer capable of doing anything 14:20 useful you will need a lot of cubits 14:22 current estimates say that you would 14:23 need 20 million cubits to break RSA 14:25 encryption if you want to cure cancer or 14:28 solve global climate change you would 14:29 need orders of magnitude more than this 14:32 today the largest quantum computers have 14:34 about 1,000 cubits so we multiple orders 14:37 of magnitude away from achieving 14:38 anything useful the Bulls say that 14:40 Quantum technology has already been 14:42 proven if the industry continues making 14:44 advances they'll eventually be able to 14:46 do something useful however there are 14:48 well-respected academics who think that 14:50 a useful quantum computer is not 14:51 possible even in theory the most notable 14:54 of these Skeptics are the Israeli math 14:56 professor Gil kalai and the Russian 14:58 physics professor male jackinov they 15:01 both argue that Quantum bits are 15:02 inherently unstable as the number of 15:04 cubits increases the number of quantum 15:06 States increases exponentially this 15:08 level of complexity makes a sufficiently 15:10 large quantum computer impossible to 15:12 control even in theory to be clear Dr 15:15 Kai and Dr dakov are in the minority the 15:18 majority of researchers in the field 15:20 argue that a quantum computer will one 15:21 day be possible there's a strong 15:24 incentive for academics to be optimistic 15:26 many academics have dedicated Decades of 15:28 their lives to study Quantum Computing 15:30 if you come out and say this was all a 15:32 waste of time that wouldn't exactly be 15:34 good for your funding or career 15:36 prospects

The video is accurate. Quantum computing companies have already gone public and then bankrupt.