Selling practice · Article · Capture 2017
Being a know it all can be expensive
From The Accidental Salesman’s historic collection. The original source is preserved in the Internet Archive; the practice notes below are contemporary editorial guidance, not a reproduction of the original.
HTTP 200 recorded in the archive index; current playback has not been confirmed. Capture dates are not publication dates.

Editorial practice note
A question worth asking
What part of your selling practice is worth testing, and what result would make the test useful?
A small experiment
Choose one repeatable action for the week, record your starting point and review the outcome before changing another variable.
Treat this as a test, not a proven result. Note the context, what you changed and what happened.
Explore this stage of selling →Related reading
Source record
Original address: http://theaccidentalsalesman.com/articles/being-a-know-it-all-can-be-expensive
Capture: 20170501120627. Index recovered 13 October 2026. Some titles are derived from the historic address. Original copyright remains with its rights holders.