single word requests - What is it called when someone does an action they don't fully understand?

I think cargo-culting might be an appropriate phrase. I see it used often in the programming world but the concept is applicable anywhere.

Here's the history of the phrase: Cargo cult

Metaphorical uses of the term

The term "cargo cult" has been used metaphorically to describe an
attempt to recreate successful outcomes by replicating circumstances
associated with those outcomes, although those circumstances are
either unrelated to the causes of outcomes or insufficient to produce
them by themselves. In the former case, this is an instance of the
post hoc ergo propter hoc fallacy.

The metaphorical use of "cargo cult" was popularized by physicist
Richard Feynman at a 1974 Caltech commencement speech, which later
became a chapter in his book Surely You're Joking, Mr. Feynman!, where
he coined the phrase "cargo cult science" to describe activity that
had some of the trappings of real science (such as publication in
scientific journals) but lacked a basis in honest experimentation.