Complex sentence: Management abandoned that continuum in a decision that almost immediately affected the Packard image, inflicting a wound that would prove terminal by the mid- 1950s, yet its decision was not at all extraordinary or unexpected at the time.
Split into simpler sentences: Management abandoned that continuum in a decision that almost immediately affected the Packard image, inflicting a wound that would prove terminal by the mid- 1950s. Yet its decision was not at all extraordinary or unexpected at the time.