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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 fully agree with you. I thought the same, when i was resolving this task. And i think the most part of programmers thought the same.
Agree
Then maybe it's a good opportunity to free the mind and get it out of the box of "the only right interpretation"? :D For example in C#, which is as OOP as it gets, it's extension methods which can be used to extend types specifically without inheritance.