I find myself agreeing with Cougar a lot, lately.
Prometheus was, in general, promising, but failed to deliver, had the “accept stupid things” level raised too high (rolling spaceship squashing the lady who doesn’t understand right angles, aliens that grow massively without eating a single breadcrumb, we could go on), and really, if you need to read a book to understand it, then it doesnt stand up as a film. Ridley Scott has made some great films but this was an ambitious mess.
Memento was excellent. Much like the rest of Nolan’s output.