"Imagine a jam session in music. You come together, bringing your instruments [and] your skills. Someone sets up a theme, and you jam around it. You don't overanalyse it, you don't discuss it to death, you jam. You bounce your ideas off other people, and play around with what comes back...
[A design] Jam works in just the same way. But it's not music you are jamming - it's ideas."
The design process requires user research to provide insights.
During the jam, you will gather feedback from people which ultimately become help justify your design decisions.
Do remember it's 'Safety First' - don't put yourself or others in danger!
Don't take photos/recordings without permission
Don't take photos of minors (or anyone who looks under 16)
Do try to ask open questions
Do assign a dedicated scribe
Do dig deeper - keep asking "Why?"
A prototype is a something you can use to test your idea with people.
Source: https://twitter.com/adamstjohn/status/972510232223080448
...to transform your ideas into prototypes!
As well as...