Our algorithms apply to serial data, where the tips of the tree have been sampled through times.
They estimate the substitution rate and the dates of all ancestral nodes.
No statistician could ever condone a method which selected one value and discarded all the other 139. They found what might have been the world’s oldest rock crystals, but unfortunately they were too old!
In fact, the other 139 crystals show such a confusion of information that a statistician could only conclude that no sensible dates could be extracted from the data. They extracted diamonds from rocks in Zaire and found by the potassium-argon method that they (the diamonds) were six billion years old.
The table below shows you how to calculate the octave of Saint Michael.
When the input tree is unrooted, they can provide an estimate for the root position, thus representing a new, practical alternative to the standard rooting methods (e.g., midpoint).
Our algorithms exploit the tree (recursive) structure of the problem at hand, and the close relationships between least-squares and linear algebra.
People nod, and then ask me whatever pressing dating questions they have.
In France however, there's no such thing as a dating columnist.