This is very confusing, sir. This seal thing.
Hm. Okay, let me try again. All of this is as per what Kagome has taught to Hazō and should not be interpreted as direct WoG:
Every person speaks in their own distinct way. The choice of vocabulary, the pitch and timbre of your voice, the characteristic speed at which you talk, the particular verbal tics -- all of these are distinct and uniquely identify a person.
People can say the same things in different ways. For example, "Please bring me tea" has the same fundamental meaning as "Fetch me tea" although they are different words and different 'voices'.
Only certain combinations of words are meaningful. If you say to someone "tea apple spasm plort" there's no way of knowing what the stinker might do -- stare at you blankly, laugh in your face, or get mad and hit you with a stick.
A seal is a set of instructions to the intelligence that exists in chakra, written in the language of chakra.
Those instructions are encoded into a diagram called a seal blank. The diagram is not the instructions. The diagram is simply the tool that you use to shape the instructions, much like the flute is the tool that you use to shape the music.
The instructions are formed out of chakra. You push chakra into your design in the proper way, introducing it at different speeds to different segments of the design, all in the correct sequence. It's like playing the flute -- you need to cover and open the correct holes in the correct order with the correct timing in order to make the music come out right.
Everyone speaks to chakra in their own voice, just like everyone speaks to other people in their own voice. Of course, chakra isn't a stinking liar so if you say the same thing to it twice it won't smile sweetly the first time and then call you a big stupidhead and tell you to go away the second time.
Chakra can recognize voices just like people can, and it doesn't like liars and people who pretend to be someone else. Noburi can tell the difference between your voice and Keiko's voice and, if you try to talk to him while doing an impression of Keiko's voice, he'll look at you like you're crazy. Likewise, chakra can tell if you're impersonating someone else's 'voice' and it will get mad at you.
It's easier to design a seal if you have a blank for the seal, but having the blank isn't enough. Say you want to compose a song on your flute. Not just any song, a song that will make people happy because it makes them think of chocolate. You can do it, but it's hard. If you hear someone else play that song then it's easier to figure it out for yourself, but you still have to do the work of puzzling out which note comes next and how to make that note. Likewise, if you can study a seal or seal blank that does something then to it's easier to design a seal that does that thing, but you still have to do the work of puzzling out the exact instructions to give to chakra.
Okay, that's enough talking. Let's blow some stuff up!
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