Nostalgia TV shows use timeframes targeting an audience when they were children. The original Wonder Years came out in the '80s and showed the 60s - going after 30 somethings; the same target as Happy Days (70s/50s) and The 70s Show (90s/70s). The furthest afield was the Waltons (70s/30s) that went after 50-ishes. The new "The Wonder Years" takes place over 50 years ago. The series writer was not yet born. The name implies a nostalgia show, but the target market would be septuagenarians. The more likely answer is the show is not nostalgia, but creative fiction using a spot in time - which is common in storytelling. If so, they could have picked a better name.