"Robert Morein" wrote in message


That's an interesting test that comes closer to the root
of the matter. However, there is one further test, the
only one that would satisfy me. Put the DUTs in equal
size, equal weight black boxes. Leave them at the
subject's house, so that he can switch them at a whim. No
fancy testing gear, no switches. Just indistinguishable
containers.

This has been done. Tests done this way were not found to be
more sensitive than short-term tests.