A better metaphor would be; I want to boil some chicken and I have a pan full of boiling water... Then just as I'm about to put the chicken inside, the head chef stops me and tells me that I need to pour oil into the pan.
I protest; "But sir, there's no need, the customer asked for boiled chicken, not fried chicken..."
"Do as I say" says the head chef.
So I reluctantly pour a tiny bit of oil on top of the water, then I add the chicken. It splashes around a bit, no big issues, and the chicken comes out OK.
The customer got the boiled chicken they ordered, and they're satisfied.
"See, it all worked out... Aren't you glad you listened to me?" says the head chef.