Cost of Multitasking
Multitasking is really task-switching — and every switch has a cost. A cognitive enhancement researcher separates the solid science of switch costs from the shaky claims of permanent focus damage, and shows how to switch less.

Multitasking is really task-switching — and every switch has a cost. A cognitive enhancement researcher separates the solid science of switch costs from the shaky claims of permanent focus damage, and shows how to switch less.

You can’t focus at work because the modern office is built against focus — not because you lack willpower. The research on attention residue, interruptions, and email, plus the structural fixes that actually work.

Flow — effortless, total absorption — isn’t magic. It’s a brain state with identifiable conditions you can engineer. The neuroscience of transient hypofrontality, the research on what triggers flow, and how to enter it deliberately without chasing it.

The first hour after waking sets your whole day. A morning routine built on the actual science — light, the cortisol awakening response, hydration and movement — plus the right order to do it in.

Deep work isn’t a willpower problem — it’s an attention-protection problem. The real science of sustained focus, why the “23 minutes” myth is wrong, and the exact protocol Peter uses.