No Soap, No Shampoo, No...Stink?

Keeping your natural body oils at their best is not more important than the rest of the world's right to breath fresh air when you're around.

I'm not sure if you're being serious, but I'll take it with a grain of salt. I'm not entirely sure how bad your hair smells if you don't shower everyday, God forbid you perspire and have a strong Smelly Scalp Syndrome if you don't shower once every two days. I'll keep in mind that next time someone smells, it's their powerful aroma from their hair.

I shower every day and have had dandruff exactly once. Use better shampoo.

I don't feel like digging through my sources and old research topics, however I'll just say explicitly that it depends on how your skin and hair can handle water. Showering everyday can either cause dandruff to stick, your hair to dry out, or your skin to dry out. With the addition of soap and shampoo, you're only damaging your natural oils and disallow them to do their purpose.