What does it mean that transition smoothness?

The moment between one behavior and the next is where chains are most fragile.

Example: A software developer has a solid morning chain: alarm, shoes on, run, stretch, shower, breakfast. Each link is reliable. But between breakfast and sitting down to code, the chain dissolves. She carries her plate to the kitchen, sees the dishes from last night, starts washing them, notices the recycling is full, takes it out, checks the mail on the way back in, opens a package, and forty-five minutes later sits down to code feeling scattered and behind. The links on either side of the gap are strong. The gap between them — the unstructured walk from the dining table to the desk — is where competing behaviors rush in and the chain breaks at the seam.

Try this: Choose one behavioral chain you currently run (morning routine, work startup, exercise, or shutdown). Write out every link in order. Now circle each transition — the moment between finishing one link and starting the next. For each transition, answer three questions: Does the end of one link physically place me where the next link begins? Is there a gap of more than five seconds between links? Could a competing behavior (phone, conversation, errand) insert itself during this transition? Identify the roughest transition — the one with the longest gap, a location change, or the most competition — and redesign it using one of three techniques: spatial continuity (move the links to the same location), temporal bridging (create a physical action that connects the end of one to the start of the next), or cue placement (position a visual cue for the next link at the exact spot where the previous link ends). Test the redesigned transition for three days and note whether the chain fires more reliably.