Sometimes a metaphor can use a familiar context to make an issue clearer. For example, "muddy the waters" is a great way of expressing briefly a more complex i

Sometimes a metaphor can use a familiar context to make an issue clearer. For example, "muddy the waters" is a great way of expressing briefly a more complex idea. You don't have to explain that water is clear, that mud is opaque. and that when you mix the two, you get something that's hard to see through.