Why a fair process matters
When two people want different things, the outcome matters less than whether the method felt fair. People will usually accept a result that went against them if they agreed to the rules first.
Method 1: the coin flip
Best for a quick choice between two options. Agree what the flip decides, let one person call it, and accept the first result. Use the heads or tails coin or the decision maker to put your own options on each side.
Method 2: take turns
Best for repeating choices, such as picking a restaurant or the next film. Whoever lost last time chooses this time. It builds fairness over many decisions instead of leaving one person always giving way.
Method 3: draw at random
Best for three or more options or people. Number the options and use the random number generator, or paste names into the random name picker.
Method 4: let one person choose, the other vetoes
One person proposes two or three acceptable options and the other picks. It is quick, and both people have a say.
Using the coin as a gut check
If you are torn, flip a coin and watch how you feel about the result. Relief means the coin picked what you wanted. Disappointment means you already had a preference, and now you know it.
When not to flip
A coin suits low-stakes choices between similar options. For decisions that affect health, money, safety or other people's wellbeing, use the flip, at most, as a prompt to think harder.