They started from Newbury Park Station on the Central Line, where a serious discussion was held about midwife's parking. Herewith a previous example:
On the way, they realised they had time to tour the West End before dining, so visited Trafalgar Square to see One and Other: where this lady had just been deposited atop the fourth plinth. She can be seen here being admired by, from left to right, midwife, physics teacher (2) and English teacher (advisory):
There was a game of chess, complete with erudite commentary, under way in the square: The Tournament, a centre piece of the London Design Festival.
Midwife then requested a visit to Seven Dials, an area of London just north of Covent Garden. As you will realise from the map getting in to Seven Dials is easy, but if you are stood at the Seven Dials itself, with its different choice of directions to take, and one direction only being the one you want to take, and having lost your orientation from the road on which you arrived, all the roads look the same .....
It was then on to 2 Greek Street, just off Soho Square: to a restaurant called The Gay Hussar. This had been the suggestion of English teacher (advisory), attracted by the restaurant's reputation as the haunt of sundry politicians whose caricature portraits decorate the walls. This was, of course, the ideal place to discuss the future of the world and such like matters.
Physics teacher (2) and midwife
Over dessert, a book was produced and the following problem posed by midwife and English teacher (advisory), who appeared to have been in deliberate collusion.
As a participant in a game show, you are given a choice of three doors to open. Behind two of the doors there is a goat (not the same one, presumably, two separate goats, each one behind a different door), and behind the third door there is a brand new car. You are given a choice of door to open, which you indicate to the show's host. The host then opens one of the doors that you have not chosen, and there is a goat behind it. At this point, would you change your choice of door to open?
Physics teacher began to think about the quantum mechanical wave functions of the two individual goats and the car, and that the original state before the opening of the first door by the show host was a superposition of the three overlapping wavefunctions. Opening the first door constituted a measurement of part of the system, leading to a partial collapse of the wavefunction, and the new situation being now represented by a superposition of the wavefunctions of the one remaining goat and the car ... at which point the effect of a glass and half of wine kicked in and he returned to his dessert without saying anything.
At this point, physics teacher and physics teacher (2) both agreed that the situation of the second choice was a new one compared to the first choice, and so to compare a probability calculated on the basis of the first situation to one calculated for the second was nonsensical.
Neither midwife nor English teacher (advisory) offered a solution.
As I am sure the astute readers of this blog will realise, the key to finding the answer to the problem about the meaning of life contained in this conundrum is:
Should we really value to the car