The traditional geometry approach at Cambridge was the synthetic approach, which concentrated on the geometrical pictures and the interactions, and that's really what appealed to people who liked geometry; the beauty of the patterns and the interrelationships. The algebraic side was brought in by people like Todd and others out of a sense of conscience; you had to justify some of the arguments and therefore you brought it in, you know, you knew you had to sort of play around with this stuff to be respectable; nobody liked it. He didn't like it. He would bring it…and sometimes of course the algebra would be helpful and useful in some formulas, but nobody took it as more than just, sort of, what you had to do to justify the arguments. And some didn't bother with it at all. Babbage and White and the older school, they never had any algebra in their stuff. So Todd had the algebra in it, but he wasn't really enamoured of the algebra; it was just there as I say to make respectability and clear his conscience, and he never got involved with the more abstract algebraic variety of stuff. I got that a bit from Hodge later on, with Hodge and Pedoe. And what appealed to me certainly was the geometry side; the algebra I didn't like either… but we had to do it.