What we believe affects how we treat people, what we think is valuable in life, how we act and conduct ourselves in the world, and the choices we make. Therefore, there is a moral argument to be made that we have a duty to form beliefs responsibly. But what does that mean? A standard reply would be to say we should be self-critical and be careful about our sources, which may be a good rule of thumb. In practice, how would such a duty affect our consumption of news and use of media? Are there guidelines or principles that we should consider – such as, criteria for whose testimony is trustworthy? We might also consider the importance of being honest about when we don’t know something and adjusting action accordingly.