[stupidcar]

It also requires you explain the logic of any algorithmic decision you make.

I.e. If you use any sort of machine learning model, such as a neural network, you have to be able explain every decision it makes. Given that there's currently no know method to fully explain the outcome of a neural network decision, GDPR would apparently make it illegal for any EU business to use a neural network in any user facing capacity.

GDPR advocates answer to this seems to be that, while the regulations might read as such, it hasn't actually been tested in court yet and, who knows, maybe whatever judge it eventually comes up with will decide to keep neural networks legal!

So, if you're a company using machine learning in Europe, you just have to wait a few months and keep an eye on court news to determine if you entire strategy is permitted or not. Thank God for the stability and confidence provided to businesses by the single market!