... are clearly illustrated here in a tale that includes a fascinating look at the idle rich at the end of the roaring 20's who are so bored that they'll try anything for a thrill, owe their income to forefathers long dead, and basically play all night and sleep all day. But that's just the set-up for the real story.
Ordinarily I'm not that huge a fan of DeMille, but I found his first foray into sound, "Dynamite", a very good and innovative film. The actors don't speechify endlessly, the camera moves, and the story moves with it. Unlike many films from 1929 it's worth a repeat viewing for the entertainment value, not just the novelty of seeing an industry in transition.
That doesn't mean that there isn't plenty of an industry in transition on exhibit, but rather than inane musical numbers, De Mille uses sound appropriately and also employs largely unknown actors from the stage to keep the emphasis on the plot and in particular, the relationships. From the hammering of the builders of Hagan Dirk's gallows and the singing of "How Am I to Know" by a fellow death row prisoner played by Russ Columbo during the wedding scene, to the strange aero wheel race at the country club, to the playing of a particular song on the radio introducing a romantic moment, this film was an innovative technological marvel when it was first released. However, technological marvels fade with time, and what you do remember are relationships that hit home and are memorable. Many have already stated the outrageous premise of the plot. What is not outrageous and rings true after almost 85 years is how you don't get to pick who you love - it just happens and it can often be most inconvenient, and how heroes can be found in the strangest places and in people you would not think would be up to the task.
I'd recommend this one highly and not just to early talkie enthusiasts.