The mathematicians like everything absolute, like it is definite as a rock. The so called limit formula is the definition that implies that a limit to the .9999 to the infinite equals 1. This definition is self contradicting because INFINITY DOES NOT HAVE A LIMIT but they dismiss it because just as they say that photon does not have mass (which it does 10^-50g) they dismiss this as well because as they say it is NEGLIGIBLE. I really hate this but if you were asked what is the .9999 really equal to, understand that by human mathematics definition it is equal to 1, when in reality it does not.
Absane learned the definition, every book has it allright, every mathematician says it allright, well its all an assumption, its all based on an assumption that infinity does have a limit.
AND NO I DON'T PULL THIS STUFF OUT OF MY ASS: http://www.aip.org/pnu/2003/split/625-2.html
Assigning mass to a photon is not logical, but you know that already.
Assigning a specific mass-energy to a photon is completely off-the-wall, but you know that already.
How could each and every photon have an energy equivalent to exactly 10^-53 kg, when E = hv, and v is variable (ex: 'blue' photons have a different v than 'red' photons)? The number you are quoting is a theoretical upper limit, and so, should obviously not be applied in the way that you imply.
Am I misinterpreting what you're saying, or were you just making fun the banality of the entire .999 ~ 1 "debate"?