If you hold harm constant, of course they're the same. What weighs more, a kilogram of iron or a kilogram of feathers? Wrong question! Which is more likely (

If you hold harm constant, of course they're the same. What weighs more, a kilogram of iron or a kilogram of feathers? Wrong question! Which is more likely (not “possible”, “more likely”) to injure you: a kilogram of iron falling overhead, or a kilogram of feathers?