mason55's is spot on: keep digging. If someone really did something, they can easily answer any detailed question about it, including what alternatives they con

mason55's is spot on: keep digging. If someone really did something, they can easily answer any detailed question about it, including what alternatives they considered/tried. Re #2, you have to control the interview, and come armed with questions to draw people out. 'kritiko mentioned their difficulty defining concrete measures for the outcome of their work. Can you tell me about the impact that's had on the team?' Re: #1, I recommend reading 'Radical Focus' and Move (Patty Azzarello). A PM should be able to define measures of impact, and be able to communicate why they are important. If they can't do that, how could anyone trust them to prioritize features/whatever?