Commentary: a "source" of error: computer code, criminal defendants, and the constitution

Chessman (2017) warns of the current trend to admit into court unchallenged the results of complex computerized calculations. He provides a number of examples and arguments claimed to demonstrate the need for open source software to remove the “black box” element. We agree with parts of this sentiment, and the topic of this special issue, that there is a danger with those using and receiving information from black box systems.