I have a manager precisely because I need to
not know everything my work impacts; my head is full enough with what I'm doing to make this app work
without pursuing perfect knowledge of how coworkers, customers, sales, marketing, investors, etc all fit in with decisions. I may be directed to do "not the right thing" not because someone is stupid, but because I don't know (and don't need to know) some of the interactions & consequences of doing it (say, spending another day refining a process means good chance of losing a potential major customer).
"We demand rigidly defined areas of doubt and uncertainty!" - Douglas Adams, H2G2