Timeline laid out according to a logarithmic scale
See also: Detailed logarithmic timeline
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A logarithmic timeline is a timeline laid out according to a logarithmic scale. This necessarily implies a zero point and an infinity point, neither of which can be displayed. The most natural zero point is the Big Bang, looking forward, but the most common is the ever-changing present, looking backward. (Also possible is a zero point in the present, looking forward to the infinite future.)
The idea of presenting history logarithmically goes back at least to 1932, when John B. Sparks copyrighted his chart "Histomap of Evolution".[1] Around the same time it was also explored by the cyberneticist Heinz von Foerster, who used it to propose that memories naturally fade in an exponential manner. Logarithmic timelines have also been used in futures studies to justify the idea of a technological singularity.
A logarithmic scale enables events throughout time to be presented accurately, but it also enables more events to be included closer to one end. Sparks explained this by stating:
As we travel forward in geological time the more complex is the evolution of life forms and the more are the changes to be recorded. Further, the most recent periods of evolution hold the most interest for us. We need therefore increasingly more space for our outline the nearer we approach modern times, and the logarithmic scale fulfills just this condition without any break in the continuity.
Two examples of such timelines are shown below, while a more comprehensive version (similar to that of Sparks' "Histomap") can be found at Detailed logarithmic timeline.
^Onion, Rebecca. "The Entire History of the World—Really, All of It—Distilled into a Single Gorgeous Chart". The Vault. Slate. Archived from the original on 15 September 2013. Retrieved 5 September 2013.
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