One use case it is you can share different number of key shard to individuals. Thus, they have more "power" based on how much you trust them. If this is your w

One use case it is you can share different number of key shard to individuals. Thus, they have more "power" based on how much you trust them. If this is your will, you can give 3 shards to your sister (that you trust absolutely) and requires 4 shards to decrypt it. Your "semi-trusted" friends needs to be 4 to decrypt it, but your sister only needs to know one of your friend to access. Written in rust for extra HN creds /s