Term 'tbl_df' is used without explanation

[maneesha]

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.

[Teebusch]

Thank you, @maneesha. This is a really good point. I think we can remove the entire sentence

"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."

• Before we switched from read.csv() to read_csv() the imported data was a data frame. I think now it is a tibble right away, so there never should be any "running off the screen" in the first place.
• Earlier in the lesson, we say that tibble is a special type of data frame, but the difference doesn't matter for the lesson, so we won't discuss it. I think we can stick with that decision here.
• I also don't think this comment is particularly useful to the learners.

[tobyhodges]

Thanks both for contributing to this discussion. The lesson underwent a major update and reorganisation when #887 was merged. As this issue relates to content in a version of the lesson before that update took place, I will close it. Please open a new issue if you believe that some or all of the changes being discussed here remain relevant to the redesigned lesson, linking to this thread where appropriate.