I want to add something to that. I think that there is something else that is relevant to decisions to interfere with others who judge things by a different set of standards.

I think the kind of interference may be relevant. Perhaps some kinds of interference are more easily justified than others? Consider of the following scale of interference:

• complete non-interference
• persuasion
• creating new options for others
• applying pressure and incentives
• coercion

When we think of a typical case in which we are tempted to interfere with other cultures -- to lower birth rates or stop slavery or clitoridectomy for example -- we can often place the options on a scale like this. Leaflets advocating birth control are a form of persuasion. Opening clinics where contraceptives are available creates options. Laws limiting the number of children that families can have is a from of coercion.

My suggestion is that where the interference falls on this scale is relevant when we are trying to justify it.