Talk:Khan Academy/@comment-24.34.11.217-20140805230214/@comment-29331244-20140806080621

E = mc2 is formula to find a energy in a piece of mass overtime, however many people misunderstood about this theory as it wasn't show any topics with light speed. If you have to be around 300,000,000 meters per second and solve this skill full with 5 exercise in 0.1 second. 300,000,000 divide by 0.02 = 15,000,000,000 skills per second which is over the current number of KA exercise at about 900.

Also, Chris Hohmann take average 0.4 second to solve 1 problem on Addition-1 skill. It wouldn't be that hard for 0.1 second if you have a better internet connection and better computer and practicing for couple months.