Or Ayrton Senna.
Karting is where the trade is learnt.
Some drivers who've gone to Single seaters from Karts have won races/got poles very early. I think Kubica was one iirc Pole position at first attempt? Raikkonen didn't drive a lot of cars before F1 and would have been earlier if it wasn't for the license requirements.
Even that kid who's promoted as coming from video games, cut his teeth in Karts. Then there's Ferrari being questioned for giving Valentino Rossi's a test, then doing a reasonable time, an ex Kart champion!
Then you've got the F1 drivers using Karts as part of their off season training. 'it keeps me sharp for F1" Michael Schumacher.
But karting's record for predicting F1 drivers is even worse than GP2 level. Otherwise Liuzzi, Pantano and Trulli would've all been F1 superstars like they were in karting. And that's only the drivers that actually made it to F1, because pretty much every other karting world champ disappears midway through the ladder (I'm talking only the guys that actually had the money to move to single-seater cars here).