Managing objects in analytics workflows, using lists as columns in data frames

Lightning talk given at the Institute for Advanced Analytics at NC State on 2019-04-27 .

RESOURCES (on final slide):

EDITS:
There are a few places where I garble my words or forget to make an important point, but I think the only place I say something blatantly incorrect is:
@4:37 I say "You have a data frame for each list", I meant to say "Each element (row) within this list (column) is a data frame."

CODE: