ecology

In the Manipulating data episode it says

You may also have noticed that the output from these calls doesn’t run off the screen anymore. It’s one of the advantages of tbl_df over data frame.

This is the first place the term tbl_df is used in this lesson, and it is not clear that this means tibble.

• I felt like nunique was arbitrarily (re)introduced when it was necessary. It wouldn't be top-of-mind for students solving problems.
• The lesson answers need to be adjacent to the exercises.
• I like the pre-introduction of masks and then circling back around to explain them.
• I feel like Part 4 needs to be broken up and integrated across other lessons: it felt thin on its own.
• Horizo

Is your feature request related to a problem? Please describe.

Exported package doesn't make much sense. In group it's used to describe a dependency for the group module. So it can be in the group module package itself.
Moreover, it doesn't export any useful type outside

Using exported, as a package name is not idiomatic, and it's blizzard..

Describe the solution you'd like

#119 added a functionality to save out the splits if they weren't provided and to provided an all-zeros array with the correct shape if we can't load a video deep within the DataLoader. These items should have tests added for them:

• add test for splits files getting written out
• add test for bad video getting zeroes

At the bottom of the setup page, under Am I Ready?, the link to the first episode is broken.

In that same section, there is the following phrase: If you can follow the instructions under “Relational Databases” or “Import”, everything should have downloaded and installed correctly.

Perhaps consider revising to something like: The instructions for importing the data into the DB Browser can be