Reduction in the time range of a species

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Discussion Overview

The discussion revolves around the observed reduction in the duration of existence of hominid species over time, particularly comparing Homo erectus and Neanderthals. Participants explore potential reasons for this trend, considering various factors that might influence species duration.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions why more modern hominids have shorter durations of existence, citing specific examples of Homo erectus and Neanderthals.
  • Another participant suggests a possible correlation between the reduction in species duration and global temperatures, drawing an analogy with piracy.
  • A different viewpoint proposes that increased information may lead to shorter modern ranges by reducing the variability in species survival.

Areas of Agreement / Disagreement

Participants present multiple competing views regarding the reasons for the reduction in species duration, and the discussion remains unresolved.

Contextual Notes

Some assumptions regarding the relationship between information, global temperatures, and species duration are not fully explored, and the discussion lacks detailed definitions of key terms.

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6) REDUCTION OF DURATION? Why are the durations of species of

hominids decreasing over time? The more modern the hominid, the

shorter its existence. For example, according to wikipedia, Homo

erectus lived from 1,900,000 BC to 70,000 BC. By comparison, the

more recent neaderthals lived from 130,000 BC to 40,000 BC. Why is

the existence of the neanderthal so much shorter?
 
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My guess is that it's the same reason that piracy is inversely related to global temperatures.
 
I would be inclined to suspect that the shorter modern ranges are mainly due to increased information. That decreases the "standard deviation" involved.
 
I see, thank you
 

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