Scalar technology/weaponry is even more absurd than DEW, which at least tries to invoke real things like lasers.

You want to know what a scalar is? Vectors are magnitude and direction, scalars are just magnitude, like a regular number.

A firearm could be considered a "vector" weapon because it launches mass in a specific direction at a specific velocity. But it's not really a vector weapon because vectors don't cause damage or exert energy by themselves; they're just mathematical notion. Mass in motion imparts energy and damage; it's just that mass in three dimensional space has to move in a direction at a velocity at all times, and math just calls this motion a vector.

Scalar weapons (if they actually existed) would then have plenty of power, but no ability to actually aim said power. It wouldn't be able to do an omnidirectional blast, as that is still described by vectors. It would quite simply be a weapon that you cannot fire, aim, or move at all. And like the "vector" weapon above, it still wouldn't be able to do any damage because scalars don't do damage, they're just numbers and notation. It would be the most useless invention in existence.

Scalar tech/weapons/waves haven't been proven to exist, and proponents have to arbitrarily redefine core concepts in math and physics to make them halfway work in theory. And they rely on the public's lack of familiarity with math/physics to avoid being called out on this.