Right, the one person (Neo?), has to be able to verify the output. Most of us can’t replace the accountant because we can’t really … replace the accountant. We can replace the accountant’s work, but we can’t replace his/her other work which is knowing if the accounting is right. However, an accountant can replace N other accountants.

One programmer can know if the program is right. So N additional programmers, in that case, can truly be replaced.

I can know the SQL query came back right, I can know the drop down menu looks right, you know what I mean? I can even know if it’s any good. [Person .., ] of Type Y (let’s say Y is “programmer” for now) can be flattened down to 1 in that case (we no longer need the full array of people of a certain type anymore, just the one). Over time we’ll see all different “types” get collapsed down.