/sci/ - Science & Math

>>5402823
Do you even know what arbitrary means?
The cost of electricity has to be arbitrary because it varies so significantly from place to place, even within the united states.
The bulb costs are an average and for leds you can bet your ass they will get cheaper with time whereas incandescents might actually get more expensive in an attempt to phase them out of use.
The bulb wattage is not arbitrary either. They picked a common wattage for comparison.
The cost of electricity and bulb wattage are both scalable anyway so unless you're completely mentally retarded the comparison is still quite usefull and easily modified to suit your specific situation.

As for MTBF I don't know what that is.

And here are some more statistics which people may find interesting/useful.

Who would have though /sci/ was so full of luddites?