I am utterly convinced that Bob was autistic and gave Chris his autism gene. I'm going to share my thought process:
- Autism does not materialize in a child out of thin air. Most autism is caused by genetics, either from their mother and/or their father
- Bob has some autistic traits, although it is not as bad as Chris, such as special interests (No Sonic in the 1950s, so he collected a fuck ton of records and made machinery)
- According to Bob on Chris's first date with Emily, he is "logically-inclined," most autistic people are described this way.
- Cole Smithey is not autistic. Why? Bob is not his biological father, but Barb is. Cole actually has Barb's sociopath gene. That also explains why Chris is the way he is, an autistic sociopath.