Y doesn't have to be pitted against X. X and Y can be added together to make a new dimension and a new way of thinking." Could a radical new mathematical framework help us rethink gender and overcome bias? Cheng believes so, here exploring the thorny question of why women's intellectual contributions to scientific endeavour have so often been written out of history, and arguing that mathematics can help give us new social structures based not on gender, but on character. It's a fascinating proposition. Now 16th July 2020.