If you have every peeled an onion, then you know that the first thin, papery layer reveals another thin, papery layer, and that layer reveals another, and another, and before you know it you have hundreds of layers all over the kitchen table and thousands of tears in your eyes, sorry that you ever started peeling in the first place and wishing that you had left the onion alone to wither away on the shelf of the pantry while you went on with your life, even if that meant never again enjoying the complicated and overwhelming taste of this strange and bitter vegetable.