This would hold only if processing power were not an issue. However, if processing cost was not an issue, far more laborious algorithms could be used to evaluate the target attribute directly.
While processing power isn’t free, it is much cheaper than human labor, so it isn’t the issue. The reason we can’t evaluate the target attribute directly is that we don’t know how to write a program to do so, even given abundant processing power.
It may be cheaper than human labour, but when you’re working at google scale, it still costs a lot, and there’s only so much you can devote to each of the billions of pages on the web. That said, I agree with you that even if it wasn’t the issue, nailing down a precise definition is an even harder issue. I will probably update the article to reflect that.
While processing power isn’t free, it is much cheaper than human labor, so it isn’t the issue. The reason we can’t evaluate the target attribute directly is that we don’t know how to write a program to do so, even given abundant processing power.
It may be cheaper than human labour, but when you’re working at google scale, it still costs a lot, and there’s only so much you can devote to each of the billions of pages on the web. That said, I agree with you that even if it wasn’t the issue, nailing down a precise definition is an even harder issue. I will probably update the article to reflect that.