Evolution
In case you skip it...
As the first episode of season three, “Evolution” introduces a few changes:
- Worf has been promoted from Lieutenant Junior Grade to full Lieutenant.
- Geordi has been promoted from Lieutenant to Lieutenant Commander.
- Dr. Crusher is back from Starfleet Medical and is once again the Enterprise’s Chief Medical Officer. Dr. Pulaski has transferred elsewhere.
- Fancy new uniforms!
Also, in this episode, Wesley accidentally creates a race of sentient nanomachines dubbed “nanites.” They leave the Enterprise and adopt a presumably-uninhabited planet as their homeworld.