"If you can’t explain it simply, you don’t understand it well enough."

Albert Einstein

"Neural nets are black boxes which work by magic and it’s all very complicated and you don’t need to understand what happens inside them."

Everyone else

"Hold my beer. I’m going to show you how to create a neural net in excel."

Jeremy Howard

I’m not kidding by the way. Lesson 4 and 5 of the fast.ai MOOC has a simple 1 layer NN for colab filtering running in MS Excel. This course is so good…