$5000 gadget for cheating at poker

I was at the local Makerspace last week working on a project. My friend Simon came to get me for lunch and started twiddling with an old game that happened to sit beside me on the table. You may have seen this game, Labyrinth. It’s a wooden maze with holes in it. You use two knobs to tilt the surface, attempting to navigate a ball bearing. Simon got to 3 and dropped in. I said, “Let me have a go …” I got through the first few and he said, “Well done, have you every played this before?” “No” I said, “But it feels pretty easy. You just adjust the knobs to make the ball go where you want. It’s like etch-a-sketch.” And then I proceeded to nonchalantly proceed to the end of the maze. And then I did it again, first forward and then reverse. On the way to lunch I confessed that we had one at home as a kid …