If you ever have a look at the video here, you will see Frank Wilczek adding nonsense to nonsense for the largest part of his talk. Of course, Wilczek is a kind man, and has received a big Swedish prize. But nonsense remains nonsense.
Wilczek explains the running of the coupling constants, and notes that they do not meet in one point, as they should if a grand unified theory (a GUT) existed. Instead of concluding that GUTs are falsified by experiment, he adds a second invention without experimental support (supersymmetry) and then, in addition, fantasizes that most of the spartices (supersymmetric particles) appear at a few TeV.
He acts like a man that is looking for flying toasters and sees none. Instead of concluding that flying toasters do not exist, he deduces that extraterrestrials eat them and now starts looking for them instead.
This game can be repeated without end. Once the LHC will show definitely that supersymmetry does not exist, we can invent another crazy idea that explains why it is hidden, and so forth. (It is like saying: we do not see extraterrestrials, because they are all sick at the moment.)
Wilczek is half conscious of what he is doing. He calls this process of inventing excuses "truthification". Not only is the word horrible, its content is as well. What a pity that another great scientist has left science and opted for the land of fantasy.
Why does this happen? Because GUTs are wrong. GUTs do not exist. The nonsense arises because people do not want to face this inconvenient truth. And why not? Because they have no clue. Stop this nonsense. People, go and read the spaghetti model! There you will find a proof that GUTs do not exist, and a solution for all the problems of the standard model.