Doubting is a powerful thing. It protects you from doing stupid mistakes, prevent blindly trusting and misjudgment. However, it was also your worst enemy as it fed on fear and low self-esteem.
I adore this book. i have been reading sci fi for 40 years and i have never come across such a unique blend of story, humour, humility, humanity and hubris.
Give it a try. You won't regret it.
RC