title: Keras - Linear stack of layers?
body: <p>I started to follow this "guide" to learn how to make a neural network but I'm already stuck at the first sentence</p>
  
  <p><a href="https://keras.io/getting-started/sequential-model-guide/" rel="nofollow noreferrer">https://keras.io/getting-started/sequential-model-guide/</a></p>
  
  <p>What the hell is a LINEAR stack of layer ?</p>
  
  <p>Does it mean the derivative of the stack is a constant ? (kidding but I'm getting really frustrated by guides who don't define what they're saying)</p>