>be me in middle school
>wondering how is light affected by gravity if it has no mass
>guy from my class asks how do I know it has no mass
>I tell him that if it did it wouldn't be able to travel at the speed of light
>he laughs in my face and calls me stupid for the rest of the year
>he still doesn't understand that c is essentially an infinite speed
>he thinks it's "finite" because he's seen the number 299792458 m/s
It's just a number and it's just for convenience. The speed of light is infinite. It's worthwhile to consider this from the temporal perspective of the photon.
I could not help but notice your png was not optimized anon.
I have optimized your png.
Your png is now optimized.
Special relativity deals with light and motion.
He's right, you know; you basically used circular reasoning. It would have been better if you just said "You're right, I don't know, I just read it somewhere but I don't remember the explanation. I will look into it and answer you tomorrow."