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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.
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In a perfect world, all kata would be, and would always have been, written according to all best practices.
This is not a perfect world.
( JavaScript doesn't even have tuples, yet people program in it. )
Do you think the kata will be changed when more than 38000 people passed it?