I had no intention of suggesting lesser intellectual brilliance among us here than the WC dons - sorry. I honestly believe that there is only a minority of people who can set these questions. They are not like the Oxford /Cambridge "off-the-wall" types. They are also not trick questions designed to trip over anyone either.
Ok, the essay type papers are perhaps not so demanding to set, but the science and maths papers are. To be honest, there are topics there I know neither I nor my colleagues and friends had even wondered about. These questions almost always have a practical side dealing with real-life problems. I have yet to see an esoteric one; they were everywhere in the old Oxbrige entrance papers.
At the risk of getting further off-topic, the best way I could describe them is this:
It is fair to say that even the most amazing scientific discoveries and theories have some fairly basic elements that a 10 year-old could handle. Those who set these science and maths questions handled all the parts that are beyond a 12-13 year-old's knowledge, left out gaps of easy parts but those requiring some elegant insight as exam questions.
I would not put it beyond them to have a question some day on conservation of momentum and energy (and perhaps through in angular momentum with plenty of hand-holding for a digression), and then move on to leading the candidate to prove e=mc2. (Or have they already done that?) Trying to emulate that very quickly generated new respect for them. At a minimum, they must have had a lot of fun coming up with them.
Election and indeed WC itself is not for everyone regardless of intelligence and I think it would be very unfair to other schools to label it the best. It is very good for those who thrive in that setting, but they may also thrive in some IB schools which offer very different approach.
Getting back on topic, having these dons around must create a fairly stimulating setting. Learning can be boring at times, but discovering/exploring is never that.
The most impressive achievement I note is that WC boys are rarely arrogant but they are self-assured and often self-sufficient; they also have the capacity to find interesting things to talk about in conversations with a great diversity of people.