Books where a character can see the future reliably are weird, and this one is no different. The problem is always that an unchangeable future locks in every character, even the one who knows what's coming. So I always question it when things always work out for the precog. They can't use their knowledge of the future to their advantage, they just have to try and look surprised when it happens. Having said that, this is reliably weird PKD, with mutants and paranoia and heroin pills and giant space amoebas.