First let me elaborate the argument.
- Take a calculator (wolframalpha, google or other software tools may serve as well).
- Perform some very complex operation.
- Write down the operation and the result separately.
- Go do something fun for about 10 minutes.
- Take the paper with the operation.
- Try to calculate the result.
- Make sure it's right, we will wait.
- Now check with the result you had before that it is right.
- Both results match, but one took much longer to be calculated.
The point is: If the first result (produced by the calculator) had been produced by your mind emulating a calculator then the second result, produced by your mind with no emulation involved would have been obtained in less time, due to a greater access to the raw processing power from which all calculations stem, your mind. Therefore that option is discarded by reduction ad absurdum.
However, it takes longer for your mind than for the calculator, which means that the calculator must be powered by a different piece of hardware (than that of your mind) which allows it to perform such complex calculations in less time. The calculations are really being done and they are not an illusion because the results match. Therefore we can know we exist (cogito ergo sum) and that there is at least one other thing that exists, which thinks faster than us (at least sometimes).
Now the questions:
- Is this really a counter-argument for solipsism or did I fail at some point?
- Does this refute solipsism or is it not such a strong argument?
- Has someone proposed this before? (I really doubt I'm the first one thinking this, but I have no clue about how to search for it in the state of the art).