
I really think Philip K. Dick did not consult any astrophysicists. I doubt PKD cared about anyone else's opinion, he had some mental problems, was married 5 times, but he was also one of those people who think that our existence is based on human perception. He don't need no stinkin' laws of physics! Also, in the 60's he didn't have to worry about some comic book guy dude tweeting about how one cannot suspend death by living in a deep freeze half-life. Not a care was given! He should have cared when he spontaneously lost his eyesight....yeah, that didn't end well.
If you think suspended animation, men wearing chaps and see-though shirts is all you are getting with Ubik, well I have some news for you, that is just one many things going on, I'm not even sure there is a decent linear plot. There is also some quirky predictions about the future that are kind of apropos. Everything is a fee based, you have to pay your refrigerator to open it and pay your door to leave your apartment. That door is a little smart aleck too.

There is a little joke in here about beer made in Cleveland. And in 1969 that would have seemed strange but Cleveland, technically Stongsville, has one fabulous brewery called Brew Kettle. I love their West Coast style IPA called White Rajah but I'm thinking that they make some other fine beers, if that's not your thing. They have a beer called the Four C's that uses four types of hops, two of which are on my WARNING MAY SMELL LIKE CAT PEE PROCEED WITH CAUTION so I'll skip that one, maybe just a sample. Anyway, Brew Kettle is super delicious so that joke no longer holds up. The smart aleck door--still funny.