Hacker News Reader

Interesting, they sound exactly the same to me, and I cannot even think of how they might sound different to someone else. Care to explain?

Exaggerated, Aaron sounds like "air-ron" and Erin like "ear-ron". It's similar to how some in the US pronounce "pin" and "pen" the same.

Both vowels are quite different. Aaron is /ˈærən/ or perhaps /ˈærɒn/ and Erin is /ˈɛrɪn/.

I suppose that might be true for your accent, but I was referring to an American one since the post was about US boy names.