Apparently, JetBlue (one of the low-cost airlines) set up a fake-science "experiment" to judge how pilots do when they fly more than FAA rules allow. They wired up these pilots, then had them fly in excess of government-mandated flight duration limits.
"Experiment", my sweet patootie. This was an attempt to circumvent some well-established rules in the hopes that it would generate additional profit. If they got caught (and, obviously, they did), JetBlue could point to their "experiment" and claim it was all for science.
I am SO glad I've stopped traveling!