* The way I understood it, it was like a bank making transactions. Whenever the bank has a percentile of a cent, like .001 of a cent, it just rounds it down.*

However, over time, that .001 cent accumulates and becomes an entire cent. This could be the breaking point for the bank's internal structure, because unless it takes that 1 cent backs and corrects the mistake, the entire structure will fail and collapse.

So, this mistake will always occur, regardless of how much the creator of the Matrix tries to correct it. Therefore, there will always be people, the .001 of a cent that will not accept the Matrix and be dropped and ultimately, the accumulation of the .001 cents is what Neo is, a group of anomilies made into one.

Therefore, everything in the Matrix is set up around Neo so that the 1 cent reintegrates itself back into the system so the system can continue working. Their "purpose", the Keymaker's, the Agents', are all to suit this goal. And since the error will always occur, the Architect gives Neo the option of choosing who the next generation of "liberators" will be, who those the system must reject will be as an incentive. It has happened six times before, and rather than have no chance of survival, Neo has always opted to reintegrate himself and let Xion fall for hope of a better outcome next time.

So, in essence, the Architect and the Matrix itself are always capable of destroying Zion, but they need humans, need Neo, just as the humans need machines.

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