Question: However, most boilermakers (60 percent) work in the electric power industry, so it should not be surprising that the percentage is high.
None of the boiler makers work with electricity.

Answer: no

Question: Yet they cannot be suspended above the dome, as in this orrery--they must be within the sky, as in nature." "How about putting some iron in each and using a magnet on the control tracks to move the planets?" Hanson suggested.
Hanson suggested a method.

Answer: yes

Question: The wheel is spun, the ball drops, and where it lands determines the outcome.
The wheel is spun and then the ball lands in a spot that tells you what the winner is.

Answer:
it is not possible to tell