<prompt> Human: Hi, Im 22 and just graduated from University. I received an offer from a defense contractor for 49000 which I accepted. They said at the time the only way to negotiate the salary was if I had another offer at that time. I received another offer from another company in a different state, which was 54000 Cost of living is identical which I just declined. Can I use the 2nd offer to renegotiate the first offer? The second company said Id be welcome there if things didnt work out.My official start date is in a month and a half. Ive read conflicting advice online. One plan I have is to email the HR person the offer I received from the second company, but idk if thats pushing it.  <response>: Youve accepted the offer. Trying to renegotiate is quite a faux pax. 