You're making the assumption the other party knows English, rather than say the abstraction of 'coinflip' which in itself can be abstracted. Do they understand

You're making the assumption the other party knows English, rather than say the abstraction of 'coinflip' which in itself can be abstracted. Do they understand the concept of fairness - is it even odds or not? There's a reason that numbers are considered a more universal 'language' than other forms of communication.