I have found the opposite to be true in conferences, but it might be different for maths than biology?
The worst presentations are always the one that assume that you know every experimental technique and every bit of knowledge. I always took the stance that the audience had at most a master's degree in the field and took care to explain everything, even briefly.
The worst presentations are always the one that assume that you know every experimental technique and every bit of knowledge. I always took the stance that the audience had at most a master's degree in the field and took care to explain everything, even briefly.