On Wednesday, September 14, 2016 at 6:00:50 PM UTC-4, T wrote:
On 09/11/2016 11:14 AM, FromTheRafters wrote:


Yup. The already do that. It is called the "bath tub curve".
More at Wikipedia:

https://en.wikipedia.org/wiki/Bathtub_curve

We studied it in college.

There is a common misconception that MTBF means how long
it will last. It is pretty useless for determining
longevity. Folks often mix up "Mean Time to Failure
(MTTF)" with MTBF.

In the case of an LED light, which is what we are discussing,
MTBF and MTTF are the same, because there is no repair. In a
repairable system, where it's not scrapped at first failure,
you can repair it, then continue to measure the time to the
next failure. With an LED bulb the first failure is essentially
the last