Well, I am agog! I've obviously led a sheltered life, but vow to make amends this weekend, I'm going to build a fucking super-gun and declare war on Bradford.
This is the kind of knowledge we should be sharing, my brethren, lest some of us live in ignorance of how to erm, kill cattle or piss our neighbours off.
In fact, the "Trebuchet" Billy speaks of (what's one letter between friends eh?) was a popular item of siege equipment during the Middle Ages before the Chinks brought us dog-foo-yung and gun powder. However, they were so popular, no-one actually put down on paper EXACTLY how they worked. When they went out of fashion and the weapon of choice became the cannon, the poor old Trebuchet was just forgotten, literally. Of course, after a few years all the Evil Dead's of the Siege Equipment industry croaked of old age, and their secret died with them. Our knowledge of these devices, invaluable for catapulting vast buckets of festering shite, or plague ridden corpses into besieged cities, is just supposition.
Evidently, there are several schools of thought as to how they could be made by the Medieval artisan with the tools available to him, very similar in appearance, but differing in principle. It is quite a job to get a missile like a dead cow moving with enough speed and power to get over a city wall. These people all think THEY have the correct formula and think the others are twats, hence these competitions to see whose is the best.
Right, got to go and buy some propane..........