One drawback worth mentioning is that while all R chunks in a notebook share the same environment, non-R chunks do not. This means that if the first e.g. python

One drawback worth mentioning is that while all R chunks in a notebook share the same environment, non-R chunks do not. This means that if the first e.g. python chunk creates a variable `x`, the next python chunk will not be able to use it. Jupyter notebooks don't have this issue.