Willingness to pay is subjective. That's what you said. Not ability, willingness. 

>If bitcoin fees were paid in fiat

Use fiat to buy bitcoin to mint shitcoins to sell for fiat. Repeat.

I think we may be going in circles, but I do think that the economic truth of being able to pay transaction fees or not is about as objective as we are going to get. 

If bitcoin fees were paid in fiat, I would agree with you, but they are paid in bitcoin and so, yes, I think the ability to pay them is an objective measure of whether something is spam or not.

Scoresby

I think the only definition of spam that doesn't bring in subjective value judgments is what I said in the article: transactions that aren't willing to pay the fees.

But what if someone uses bitcoin script in a novel way, kinda like BitVM? Is the script exogenous data?

bitcoin

Opinion: Spam can't cause high fees - Thriller post

> I think the only definition of spam that doesn't bring in subjective value judgments is what I said in the article: transactions that aren't willing to pay the fees.

Yea... that's not subjective at all. 

/s

> But what if someone uses bitcoin script in a novel way, kinda like BitVM? Is the script exogenous data?

Depends on the locking script. Probably. 
