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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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its an Object
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I agree. This teaches nothing but frustration and how to waste time.
Please do not forget to use spoiler tag next time.
As for your question: I am by not means expert here but I'd say it is indeed a common practice.
No, it isn't. https://en.wikipedia.org/wiki/Century
@trashy_incel although you're right, the point "2000 is not the twentieth century." is still there.
This comment is hidden because it contains spoiler information about the solution
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there was no year 0