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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
I think the phrasing is fine. The context given already implies "There are no fractional people" by virtue of well... being about people!
I got the same answer!
Could improve the phrasing in the kata to help with the 3 should be 4 issue. There are no fractional people.