My today's certainty was that yes. No matter what it says. Today, I had use it to improve my letters for some personal appliance stuff. I put into one letter "I worked in company X from 2001 to 2003 as a developer". Then, hours later, after closing the discussion chat window and opening other one, I submitted to it other letter, where, for different appliance reasons, I had mentioned only "I worked in company X for 2 years". Bing chat corrected me, "this is not enough detailed, you should specify "I worked in company X from 2001 and 2003 as a developer". What the f...? I thought it was supposed to forget. When I ask it to remember smth from a previous discussion, it says it can't.