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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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Ok, first feed, then :)
I might be too late again in my day, but I totally miss how I could get the lowest degree curve passing for all the given points.
Not an iron rule, but most katas are assumed to teach people something (or to improve a certain knowledge) and in case are generously ranked for that purpose; but here the gap seems a tad too wide to jump, looking like a kata that is ok if and only if you are already pretty familiar with the subject, leaving new-comers with few tools to overcome the challenge.
Again, a few more links or a step-by-step example may enlighten the mass about it.
[I like the style of your descriptions, though]