The nice thing about this is that we can use Dot-town as a halting oracle, which can then be used to solve any specific undecidable problem we'd want to solve.

The nice thing about this is that we can use Dot-town as a halting oracle, which can then be used to solve any specific undecidable problem we'd want to solve. Make the machine output a set of dots after running some unknown computation, such as a search for twin primes. The residents will kill themselves depending on the results.