We can only pay attention to a limited range of events -our sensory systems screen out vast amounts of information from conscious experience all the time.
Some folk resort to recording their entire life using movie cameras etc, but frankly, life’s too long for that nonsense.
Today’s invention is therefore a way to keep up with the stuff which happens around you but of which you are unaware at the time.
It consists of a microphone which feeds a big capacity recorder -but between the two a rapid speech recognition algorithm runs. The trick is that only words and phrases which go unrecognised are recorded. In this way, anything unusual, novel, weirdly pronounced, inaudible or said in a foreign language/accent will end up as a significant, cumulative addition to your life record…and can be interrogated later to help you keep apace with developments in a fast moving environment.
Isn’t this how children work, after all, when they are soaking up everything that’s new and interesting -whilst ignoring the commonplace?