They're not worth it. You should spend the time that it would take you to read this book doing some high yield activity instead, like trading stocks or growth hacking your startup. Anything less than that just isn't worth the trouble.
People have a limited amount of time, and there are far more good books than any one person could read, let alone bad books.
And... it's a book, dude. You can check it out from the library or buy it used for ten bucks and stop reading it if you don't like it; that's not going to ruin your life. If you have enough time to reply to my dumb comments on HN, you must certainly have the time to start reading the book for 30 minutes and decide if it's worth continuing or not :)
Do you know why user reviews exist?
>If you have enough time to reply to my dumb comments on HN, you must certainly have the time to start reading the book for 30 minutes and decide if it's worth continuing or not :)
That would be valid if it were me considering reading the book and if it took me 30 minutes to reply to the comment.