And if it is just words, I honestly couldn't care less. I 'd much rather write
"
Hesperocyon
is the common ancestor of the Canidae, a group of mammals colloquially referred to as "dogs""
than
"an organism, represented by a first lower molar ~8.5 mm in length with a trenchant talonid that comprises ~35-40% of the length of the molar, is the common ancestor of a group of many carnivorous hairy, endothermic, lactating organisms, (distinct from other hairy, endothermic, lactating organisms but sharing a common ancestor with the others), collectively defined by an auditory bulla with a complete internal wall, a relatively primitive carnassial, and an elongate rostrum, which are colloquially referred to as "dogs."
Cthris
said
:
However, it is clearly not right to classify anything as the same thing as any other thing when there is an infinite amount of variation between them.
Not all the variations are relevant to a given classification. Ral, you, and I all have a similar morphology, are part of a population that could theoretically interbreed under normal circumstances, have genetic codes that are significantly similar (would not reject null hypothesis for significant deviation from the average sequence), and share derived traits and a common ancestor (those were examples from 4 different species concepts). For the purpose of macroevolutionary study that is sufficient to place us in the same group.
Also, if this infinite variation prevents classification of things, why did you previously say physics was any better? How is the statement "oxygen is an atom with 8 protons" any different than "Mammalia is a taxonomic group of organisms w/ a common ancestor and the following derived traits: endothermy, hair, produce milk, have a single lower jaw bone, and have three internal ear bones"?
If physics is no better, are you arguing that we can never draw similarities between things?
22-Mar-2017 22:31:18
- Last edited on
22-Mar-2017 23:44:26
by
Rifleavenger