Goofs

Asta asks Harry to pick her up at 10 and take her to her cabin to pick up her stuff. Harry spent time in the morning looking for his missing equipment in bright sunlight before picking up Asta and heading to her cabin. When they arrived at the cabin, the sun is barely cracking the horizon. It is obviously barely past sunrise.

As Harry drives away from the cabin, the blue pickup is visible in his back window when he suddenly swerves to turn around. But in the next overhead shot, the road he had just driven on is shown to be curved, and empty far past where the truck was just shown.

In his opening monologue, Harry says 4 soda cans just burst in his truck. When the interior of his truck is shown minutes later, there are no cans at all in it, or soda residue.

Just before the alien intrudes on Dr. Harry Vanderspiegle, Harry's old AM radio was playing the beginning of "Feelin' Alright" by Joe Cocker. The radio powers down, indicating that an alien presence is nearby. After the alien throws Harry into the lake and re-enters the cabin, the radio powers back on and continues playing "Feelin' Alright". Surely the song wouldn't've finished being broadcast during the time it took for the Harry/alien's fight.

P.S. - Although a town the size of Patience (1000) probably wouldn't have a classic rock radio station, radio transmissions from hundreds or thousands of miles away from Colorado often bounce off atmospheric layers at nighttime.

After Asta and Harry leave Jimmy's and go to stand in the snow, the aerial shot shows Harry's truck, the bed does not have Astas boxes in it, if the boxes could be fit into the back of his truck she wouldn't have needed a truck.

When Harry the alien throws Harry the doctor into the lake, ice cubes are deposited around the edge of the hole, instead of random shards of ice from the frozen lake's surface.

During the autopsy scene, at a cut showing Dr. Sam Hodges from his feet, his chest is clearly moving, revealing the actor's breathing.

Harry mentions that he reconstructs molecules to change his appearance. In that case, there would be nothing for anyone to "see through" since we see molecular structures. If we saw through molecules, we wouldn't see anything but deep space.

Lenny Briscoe says "I got news for you, Cozette." But Harry repeatedly says "I've got news for you, Cozette" as he attempts to mimic Lenny.

Harry knows Neil Armstrong quotes, and panda biology, and all the culture from Law & Order, and how to use the internet to check for pizza restaurants & parking congestion; but he doesn't know that insulting someone is abnormal & offensive, or what alcohol does.

Because someone studying another culture obviously knows absolutely everything there is to know about that culture, regardless of whether they may have studied every particular aspect, especially interpersonal relationships, or experienced their dietary anomalies for themselves.