When Nora demonstrates the technique on Bill's finger, her hand changes position between shots from thumb underneath to thumb on top.
In the first scene of Season 3 Episode 10, Though a Glass, Darkly, where Virginia and Dan Logan have park a block away from the office and talking, there is a 1997 - present version of the Coca Cola logo. In the 1950's the logo was shaped like a fish tail and in the 1960 a ribbon was introduce under the words, Coca Cola. In this seen there is no fish taie or ribbon which wasn't introduced until 1997.