Why you should try five sub-optimal solutions instead of aiming for the optimal solution, why it is often better to write lower quality code at the beginning, and the importance of having discipline when you take shortcuts. 

BTW, if you are not a data scientist yet, but want to become one, you should really attend our webinar. We will demystify the transition into data science. We will show you the most effective way to build your skills. And we will advise you on the four possible options you can take to go from where you are to landing a data science job in as little as 9 months. Find out more here.