[startupdiscuss]

The things that you think are going to take a long time will take a short time and the things you think will take a short time will take long.

So, for instance, if you have 4 hours scheduled to implement some neural network to optimize X, it may take 30 minutes to type in the algorithm and get it working, but it will take 3 hours to get the environment set up, the version of Tensorflow or whatever up and running, and much longer to type up your results.

So, hopefully, if you expect this, you won't crumple in despair when you find your self 1.5 hours into the time and you haven't even got the right language working with your IDE for that hello world to come up. No, you're right on track, and just keep going.