The data flow is really well implemented with Observable. The fact you don't need to go through and repeat the execution of a number of downstream cells when yo

The data flow is really well implemented with Observable. The fact you don't need to go through and repeat the execution of a number of downstream cells when you make a change is really useful. Another great advantage they have is the data map on the right-hand margin. It's a good way of seeing how complex a notebook is getting as well as being a really efficient way of navigating through the data flow.