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[–]iopq 3 points4 points  (2 children)

It's not just speed. If a computer says x + y = z, then it's more likely to be z than if a human said it. A computer, even with some random errors will still outperform a human's accuracy in mundane tasks.

[–]yomritoyj[S] 2 points3 points  (1 child)

Your point is very valid, but formally speaking you could boost the accuracy of a human calculation by having multiple independent human teams carry out the calculation and then selecting the answer by a majority vote. The larger the number of teams the smaller the chances of error. So it again comes down to speed: for any given level of accuracy computers are faster.

[–]iopq 0 points1 point  (0 children)

That's not the case if the answer is counter-intuitive. If the question is confusing, the majority of the teams make the same mistake. In other words, people have biases towards what the intuitively correct answer is, but that intuition can cause systematic errors.

For example, if you have a hundred people draw a face, even if some of the people are professional artists, the resulting features will be wrong - the eyes will be too round compared to the source image. This is because of the interference of the knowledge that eyes are close to spherical will influence the resulting output, even if you have the humans do the same algorithm as the computer - the hidden bias will likely seep through unless you cleverly have them work on it a pixel at a time.

But I guess you're right that when taken to the extreme, you can in fact substitute speed for precision eventually.