I'd do nothing but reading if I could (ok, maybe eat some great food, buy some fancy shoes between two books...oh, and spend some quality time with the gorgeous guy I married while I am on reading-break anyway...)
The author really tried to explain stuff. Scientific stuff.
Complicated scientific stuff.
Dr. Dr. Sheldon Cooper scientific stuff.
He really tried.
But I am no science buff.
So, no I didn't enjoy the scientific part a lot.
There were some parts that were understandable - and they were great.
So hence the rating.
I had to fight a bit to finish it.