human
You understand the mechanism? said Armstrong.
gpt
By pulling one cord, the water comes in on this side of the wheel and the platform ascends. Another cord closes the sluice and everything is stationary. A third cord opens the gate which lets the water drive the wheel in the opposite direction and then the platform descends. You see, I have taken away the old lower stairway that was originally built for the tower, and this is the only means of getting up and down from the top story. It does not, if you will notice, go entirely to the top, but stops at that door, fifty feet from the rock, into which Peter is now entering.
human
It is a most ingenious invention, admitted the king.
gpt
I never saw anything like it before.
human
It would be very useful in a place like Stirling,
gpt
I suppose it would, replied the king, in a tone indicating that it was no affair of his,