Same hours invested. Interruptions force you to re-climb. Deep work compounds upward.
Each interruption costs ~60% of your progress. You reached 32, but ended at 20. That's 12 units of wasted climbing—time spent re-learning what you already knew.
Uninterrupted sessions compound. Each hour builds on the last. The steps get taller as mastery deepens. Same 20 hours, but every step counts and none are wasted.
Increase interruptions to see how quickly progress erodes. The dashed lines show progress lost to context switching— you're not just pausing, you're sliding backwards.