For purists and ride or die fans who like to quibble over such things, there are two Paul Thomas Andersons. One is the young, ambitious, hyper-caffeinated auteur behind “Boogie Nights” and “Magnolia,” full of confidence (maybe illicit substances, too), brio, and show-off-y talent (keyed up Scorsese-like camera moves and soundtracks and Robert Altman-like ensembles).