001 The 2040 challenge at the bottom of this page will be easy for some people, difficult for others, and impossible for a few.     001 > 15 seconds from 00:08 to 00:23     002 Due to various factors including the oddball effect, our perception of time is sometimes different than clock-based time; for example, one of these 10-second clips may seem shorter than the others.     002A > 10 seconds from 01:00 to 01:10     002B > 10 seconds from 11:12 to 11:22     002C > 10 seconds from 00:15 to 00:25     002D > 10 seconds from 01:11 to 01:21     002E > 10 seconds from 00:45 to 00:55