Since a key motivation for developing test-driven data analysis (TDDA) has been test-driven development (TDD), we need to conduct a lightning tour of TDD before outlining how we see TDDA developing. If you are already familiar with test-driven development, this may not contain too much that is new for you …

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OK, everything you need to know about TeX has been explained—unless you happen to be fallible. If you don't plan to make any errors, don't bother to read this chapter.

— The TeXbook, Chapter 27, Recovery from Errors. Donald E. Knuth.¹

The concept of test-driven data analysis seeks to …

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