It’s good — really — and it is called The Signature of All Things. I also find the book was nearly ideal for a long plane flight. It has enough ideas to keep one’s interest, as I find that truly schlocky fiction bores me after a short while (it is better for short flights than for long ones). But it is also easy enough to read and the print is suitably large.
Which other books do you find to be ideal for long plane flights?