Brad

Correction: He only appears twice because the angle changes. When "Mr. Plankton" is looking out the window he's looking over to his far right when the green fish passes. Then the angle changes so we see straight out the window, which is to the left of the previous angle, so we see the green fish walking still.

Correction: While that may be true, that's one of the running gags throughout Patchy's skits. His peg leg, hook, and patch all change places on his body from left side to right side. In other episodes, the hook or patch or leg do disappear altogether. That's the gag.

Correction: Spongebob and Patrick are only shown briefly and a number of issues are not known either. For starters they struggle in Sandy's treedome without water but can survive a good period of time. Additionally Sandy is aware of this so might be giving them water, wet herself while they are draped around her etc. Additionally the conditions of the treedome would vary with the seasons. Being it was the beginning of spring it wouldn't likely be quite as hot meaning they would survive a lot longer than say in Summer.

Lummie ★

Correction: It was part of the bigger joke. A few moments before Sandy came out they (Spongebob and Patrick) were talking about now being prepared to face the cold harsh winter. All of a sudden it goes from freezing cold to Spring in a split second. Everything including Sandy has changed within those moments.

Lummie ★

Correction: When you say, "No school would be open that late", you are referring to human schools? Real schools? Schools on land? We are talking about the absurd, vivid, totally UNrealistic world of Bikini Bottom, where they may live life as they see fit.

Super Grover ★

Correction: The training video could have been outdated and cheapskate Krabs wouldn't have wanted to make a new one.