Why not simply take 10-15 minutes of a simulated run through of a project?
The “Weak” question means you don’t want to hire the candi.
His interview with me, when it started, was but a formality for (1) four of the five other partners on the interview team had emailed saying they recommend we hire the guy and (2) I am on vacation and I was sitting at a pool overlooking the Caribbean when I did the call to interview him. I was of the mind that insofar as four partners thought the guy is "high quality," barring his really screwing up with me, his being hired was a "done deal," as they say.
Those factors combined to make me amenable to hiring the guy. The fact of the matter is that at the outset of the call, the guy was all but hired. I even was satisfied with him and his qualifications until he answered that question as he did. Indeed, but for his by another partner being asked what he wanted to do in the firm, and his answer aligned with what my unit does, he wouldn't have been forwarded to me and would have been hired.
I was already away and on vacation when I learned I'd have to talk to him, and the only reason for the urgency was that he'd to someone else stated he'd like to start ASAP because his wife had taken a new job for which his family had moved and his job wasn't portable. We "fast tracked" his interview process out of respect for his situation and to show from the get-go that we, as much as possible, try to do right by our people, and people in general. Indeed, I'd have been furious were I to have found upon returning from vacation that we'd known of his needs and qualifications yet made no effort to show respect for them when nothing more than moving along with alacrity -- namely asking me to spend an hour or so chatting on the phone with the guy -- was all that was needed to do so.