“The Fatal Assumption is: if you understand the technical work of a business, you understand a business that does that technical work.”

Why it was said

Michael Gerber names this assumption early in The E-Myth Revisited (1995), in his account of the "entrepreneurial seizure": the moment a skilled employee decides to quit and open a business of their own doing the same work.

What it actually means

Gerber's target is the technician, the baker, mechanic or programmer who is good at the work and assumes that is enough to run a business built on it. It is not, because a business needs two roles the technician has never played: the entrepreneur who sets direction and the manager who builds systems. When the founder keeps doing all the technical work, those roles go unfilled, and the business becomes a more demanding job whose only indispensable employee cannot leave. The assumption is fatal, in Gerber's word, because it feels like competence. The remedy is to treat the business as something to be designed in its own right, not as an extension of a craft.

How to use it

1. 1List the three roles in your business (doing the work, managing it, setting its direction) and note how many hours you gave each last week.
2. 2Choose one task that only you can do today and write down its steps so someone else could do it next time.