Oleg T- Ignorant of Cladistics too

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oleg said:

Joe, give it up already. We've been talking about clades for ages and you still don't understand what a clade is! It is not defined by shared characteristics, it is defined by common ancestry.

Reality check-

intro to cladistics

The basic idea behind cladistics is that members of a group share a common evolutionary history, and are "closely related," more so to members of the same group than to other organisms. These groups are recognized by sharing unique features which were not present in distant ancestors. These shared derived characteristics are called synapomorphies.

cladistics:

Cladistics can be distinguished from other taxonomic systems, such as phenetics, by its focus on shared derived characters (synapomorphies).

And also what is cladistics?

The common theme is that they all agree with me.

Go figure...