Ask them why they disagree, and listen. They may be right.

I should clarify: this is also the way to get them to agree. If you genuinely listen to their concerns, and consider all their points, and are genuinely willing to change direction if they're right, then that is psychologically powerful.

Being listened to, and having a point of view heard and considered, is powerful stuff. If at the end, they feel heard, and their point of view considered, then they're usually willing to go along with the majority opinion at least, and sometimes become your biggest supporter.

It is also the best possible way to find toxic employees. When someone just simply will not listen to logic, will not listen to your viewpoint, or uses your time listening to them as their time to dish about everyone around them, you have a choice to make.

Most times, being heard is all people want. Some times, being heard only validates a false sense of superiority and correctness.

Jobs and Musk are recent examples of successful people who manage by vision. Of course, plenty of people object to their style also.

How about “A computer on every desk, and in every home, running Microsoft software.”