Corrected entry: Before the ghost leaves the restaurant she does not have the mini lab but when she gets to her place she has it.
Corrected entry: Throughout the movie the cars and building are shrunk down to size and carried by people. Though the size has changed, their mass hasn't. In this and the original film it is specified that the Pym Particle works by reducing the distance between atoms. That's absurd, but in the context of the film that is what happens. This means that a human reduced to the size of an ant would have an unimaginable density, and thus his mass and weight would stay the same. There's no way the characters could carry those things with little or no effort, they would weigh as much as they did before they were shrunk.
Correction: While it's easy to miss, there actually is some brief dialogue in the first film when Scott is learning about the suit that establishes the rules. In addition to shrinking and growing, things like mass, energy and weight are also affected by the Pym-Particles. Sure, perhaps it's not 100% realistic, but the films do address these issues and offer explanation. Hence people can carry around shrunken buildings, tanks, cars, etc.
In this, and the previous film, it is specified that the Pym particles work by reducing the distance between atoms. That is utterly impossible, of course, but in the context of the film that is what happens. This means that shrunken or expanded articles or people retain their mass and weight. This is an inescapable mistake for both films, and the original posting is correct.
Here's the problem with this reply - the first film specifically states that it's not just the distance between particles that's being altered - other properties change along with them as a result of the Pym particle. The fact of the matter is yes, you can try to apply real-world logic to it and pick it apart, but the films do an adequate job explaining why it's possible to do things like carry buildings or tanks around so long as they are shrunken down, or for a plastic children's toy to become a destructive object when enlarged, as they are effected by the mysterious properties of the Pym particle. Hence, it shouldn't be considered a mistake unless a specific scene contradicts something else shown earlier in the film.
The shrinking works differently on inanimate objects. It's the suits that let the person being shrunk to maintain its mass, anything else being shrunk loses its mass. Blowing stuff up works differently though, the technology to do that is just different. The way Pym particles work is one thing, but how all of the technology involved works is a totally different thing.
Correction: This isn't a mistake so to speak. The abilities of Ant-Man and the whole shrinking and growing thing is very much a comic book thing. And the only way these movies even work at all is through the suspension of disbelief.
Maybe, but in the first film they explicitly state that even though the shrinking technology makes objects sizes' smaller, it doesn't change their mass.
Corrected entry: At the beginning when Scott is playing with Casey she suddenly wears a helmet that she did not have before.
Correction: The helmet was sitting on the "escape ant" and she puts it on while Scott is climbing on the sled. You can briefly see Cassie putting the helmet on when Scott asks how she knows about the "po-po."
Corrected entry: When Hope is fighting all the guys in the hotel, she has the device that lets her shrink and enlarge things (she enlarged a salt shaker to stop some guys). But she could have just shrunk all the guys rather than engage in hand-to-hand combat. At the very least she could have enlarged the chandelier so that it comes crashing down, flown to the tech she was buying, shrink it and fly away with it.
Correction: Shrinking a living mammal outside of a protective enclosure causes it to turn into goo. This is a major issue in the first Ant-Man film. Hope wanted to escape the men, not kill them. Clearly her tactics were sufficient to get out of the hotel, so it isn't a stupidity that she didn't use every gadget in her arsenal.
I'd hardly call a van a protective enclosure. But even if that's the case, the fact that she had the ability to avoid the fight in the first place and quickly escape and didn't is the stupidity. Just like the various stupidity entries of people having guns, tools, or keys and not using them.
I agree. Since she could shrink herself down, that's all she had to do.
Correction: The lab was in the van with Hank, she subdued him and pointed at the lab indicating she was going to take it, when Ant-Man and The Wasp arrive back at the van, Hank informs them she has taken it. The event happened offscreen.