Fargo and Telling Time

What is it with this show and the writers' ability to tell time?

In Season 1 (2006), Molly Solverson was 31 years old, meaning she was born in at least 1975. Yet in Season 2 (1979), Molly was 6 years old.

In Season 2, Episode 7 (1979), which takes place a couple or a few days after the events of Episode 6, Floyd Gerhardt leave the police station right before Lou and Hank decide to check out a call from a gas station attendant about Hanzee. Floyd gets home from the police station (which is a short distance), gets a phone call from Hanzee about Dodd Gerhardt, Mike Milligan kills the Undertaker, and then Ed Blumquist makes a phone call to Mike Milligan about handing Dodd over to him. In the next two episodes, however, we see that everything Peggy and Ed went through with Dodd Gerhardt and Hanzee leading up to Hank and Lou arriving occurred within ONE Day rather than a couple. And, Hanzee makes the phone call to Floyd an hour or two AFTER Ed calls Mike Milligan. When said events are put in chronological order, it not only doesn't make any sense for Otto's funeral to occur within 24 hours of his passing, but that also means, chronologically, when Floyd left the police station before Hank and Lou travel up to cabin, Lou and Hank manage to get ALL the way up to the cabin in LESS time than it took Floyd Gerhardt to travel the short distance home.

In Season 3 (2010), Ennis Stussy dies at the age of 82, meaning he was born in 1928, and meaning he would have to be in his late 40s during the last half of the 1970s. Yet, the flashbacks of Thaddeus Mobley in the 1970s have him depicted as a young man who clearly looks like he's in his late 20s.

Is this done intentionally to go with the opening intro that disclaims this is a "true story", or did the writers legitimately go to the Texas Chainsaw 3D school of math?