Perhaps a better way to put it is that fixing biased sampling is more useful than increasing the size of the dataset. If I&#x27;m profiling a program using a sampling profiler and it&#x27;s biased, running it longer to collect more data is easy but doesn&#x27;t help much - it&#x27;s still biased but with higher resolution.<p>If you can somehow adjust to remove the bias more resolution might still be useful but you can&#x27;t adjust for data that&#x27;s not there - suppose the profiler never samples during garbage collection.<p>Another example is photography where a longer exposure (more photons) can be useful but won&#x27;t fix fundamental problems with the camera or how the photo was taken. If the camera is out of focus or shakes because you don&#x27;t have a tripod or image stabilization, a longer exposure won&#x27;t fix it and might make it worse.