What’s in a name? In Ireland and the UK they’re called crisps, but in the US they’re chips. Whatever they’re called they’re universally loved. I bet it’s all the MSG in them. The monosodium glutamate in them is the flavour enhancer that makes you want to have just-one-more-crisp. The Wikipedia page on the ingredient is rather interesting, and it seems that various tests have shown it to be safe.
This image was made in Dingle, Co. Kerry. A tourist munched on the crisps as we approached so I had to take a shot!