The technologies we work with are extremely detailed. Without a clear mental model of how things work together, it's easy to get lost or confused.

• 00:00 A common pattern when a dev is stuck
• 01:12 What is a "mental model"?
• 02:15 A concrete example of a mental model
• 04:30 Discussing rebase versus merge
• 06:30 A PHP specific example for rebase
• 07:40 Mental models for queue workers
• 10:10 Open source helps us understand
• 11:30 Silly bit