[AndrewC]

Including, it seems to me, whether or not they have the basic property of existence ;)

I think that applies to any field. The field is inferred by its "effects". Science deals with those fields that it can measure and mathematically describe. -At least that is my opinion.

[general_re]

I think the measurement part is critical, whether done directly or indirectly - I can mathematically describe an equilateral triangle with sides a million miles long quite readily, but that doesn't mean that it "exists" in any meaningful sense of the word... ;)

[js1138]

The field is inferred by its "effects". Science deals with those fields that it can measure and mathematically describe. -At least that is my opinion.

The fields accepted by conventional science have the property of being quantifiable. They do not vanish under the spotlight of skepticism.