Do all people with autism exhibit the same symptoms

No

All people with autism do not exhibit the same symptoms.

Autism is a complex developmental condition that manifests during the first three years of an individual's life. Autism occurs due to the effect of a neurological disorder on normal brain function, which then influences an individual’s social interaction skills, communication and developmental language. Autism has a range of symptoms which may be mild for some and more severe for others.  Symptoms of autism disorder include repetitive behaviors, seizures, lack of spoken language etc.

i'd say that the moon rock is about 2.2 billion years old.