[riaandewit]

What worked for me: come up with a bit of patter or a general “surrounding script” that you wrap your answers with. JFK did this sort of thing to buy himself time to think.

You can also use it to build in your disclaimers: you’re just giving your opinion on the spot and might have better answers after thinking about it offline for a bit. Counter to intuition, I found the “hmm, first approximation says THIS to me, but can I take the problem away and get back to you with something better, once I have more data and have run through the options in my head?” Approach tends to build trust over time, and actually helps ramp up your confidence too. It turns the whole process from a step to a gradient.

Don’t worry too much about the body language of confidence. Unless you’re doing something pathological like picking your nose or something, there is a WIDE range of acceptable ways to interact: think Brin, Musk, Newton, Darwin, Hawking.

And… cut yourself some slack - you’ve got this ;)