It's no fun feeling your thoughts are being controlled by an electrode, and someone else is holding the clicker.
Carrying out the thing, getting it to the point when one might say: There, now it is good - that point is hard to reach. Often, one sets very high goals for oneself. Perhaps too high.
If I was designing a web site for elementary school children, I might have a much higher percentage of older computers with outdated browsers since keeping up with browser and hardware technology has not traditionally been a strong point of most elementary schools.