Software Testing a retail site becomes really important at specific peak times of the year. In this Black Friday Special of The Evil Tester Show Podcast we consider lessons we can learn from discount sales, retail under pressure, and confidence tricksters and expert provocateurs. We discuss: - The Black Friday Software Testing Game - Oracles - Observation - Evidence - Belief - UK Sale of Goods Act - what is a sale? - What is an expert? - How to communicate like an expert - Automating through the GUI - Options for Automating - Testing for Confidence - Communicating Confidence - You can be confident that something is wrong - Confidence doesn't mean Goodness  Show notes: http://eviltester.com/show/003-black-friday-2017/