or the Grandfather Paradox - if you travelled back in time and killed your grandfather you would not have been born and would not therefore have killed your grandfather.
I have a question about the book:
'Paradox - Al-Khalili, Jim'.
Fill in the form below.
We will respond as fast as possible.
We value your privacy
We use cookies to measure traffic, improve Boekstra and let Google tailor ads to your interests. You can keep using the site either way — even if you decline. More info