The Book On The Myth of Multitasking makes the case that the modern cult of "doing more at once" is vandalizing our ability to think clearly. Multitasking isn't parallel focus; it's rapid task-switching, and it burns cognitive fuel while degrading memory, accuracy, and depth. The result is a life lived in tabs, not pages.

Built as part of The Deep Work Society trilogy, this book avoids productivity theater and cheap hacks. It explains how our environments are deliberately designed to distract, why attention residue makes "quick checks" so costly, and what it takes to design days that protect genuine concentration. The tone is dry by design: argument, example, application.

Readers will learn:

Why availability isn't accountability and "busy" is a warning sign.

How switching costs and attention residue quietly drain performance.

Practical rituals like the First Hour Rule, one-screen focus, and the 90-minute window.

The finish isn't a pep talk; it's an invitation to retire the lie and live with presence. Depth over noise. Pages over tabs.