[Alex]

The Tifft research (with Arp's follow up) that you're quoting is generally regarded as bunk these days (and really never had much support to begin with), a product of bad modeling and finding significance below the level of measurement, and has been pretty thoroughly stomped on by the many more thorough surveys done since the mid-80s which finds no support for quantized redshift.

Though it is fun watching geocentrists cling to this research since one of its implications would that the earth is at the center of the universe. Another is that the Big Bang theory of cosmology is wrong.

So if that is what he told her, I hope he followed up with the additional research done over the last 20 years. (It's July 5th now so a complete derail is ok, right?)