I'm hearing what you're saying, and if you want to take the broadest possible definition of a computer, then sure, the human brain is a computer. So is a protra

I'm hearing what you're saying, and if you want to take the broadest possible definition of a computer, then sure, the human brain is a computer. So is a protractor. Shadows on the ground could be used to "compute" the integration of a curve. But its pretty clear that this isn't the issue at hand in the OP.