system
Given the following post, respond as if you're commenting on Reddit:
human
How to politely turn down a job offer?

Last month I applied for two PhD positions that interested me. The interviews went well and now they both offered me a job. I did not expected this, so I never mentioned in the interviews that I applied for two PhDs at the same time. I want to go with the one that suits my academic profile a bit better, but how do I politely explain this to the other one? I'm in a small field so it is in my benefit to maintain my network. If anyone has any wording advice that would be great.
gpt
Simply say that you have decided to accept another offer, they'll understand, many people apply to several PhDs and jobs alike.  The polite thing is to let them know as soon as possible so they can offer it to someone else.