Assumption is a lazy man's approach to making decisions, it's always better you stay in the current when stating facts or making decisions.
I disagree with you. One have to assume to create the reality. Most of the philosophers and scientists used assumptions to create the unthinkable so when you say "assumption is a lazy man method to decision" then you turn to the then president of Nigeria who says, Nigerian Youths were lazy" when he has not tested them to do job for him. In my university days, there was a course I borrowed from another department and it is that, life without assumption is always misinformed himself. Like if you are going to pH from BY, at first you have to assume that if you left her by 10 am and you miss the car or rain fall that you miss the car what will you do? You go think of all these things first before making any decisions.
The p2p is not an assumption as I see it. But in reality. You have to confirm the credit alert before releasing the coins.
I would not completely agree assumption is always a lazy man approach, it maybe but base on different factors. I did some research and get to understand assumptions is a synonym of speculation which we often use to determine the future price of Bitcoin. Life all this while has been based on assumptions, for example we often assume getting closer to the festive period the price of goods will increase, so we hasten to purchase what we need before then, it's just a speculation base on deductive reasoning. Assumption is just a guideline that will lead to the expected outcome, most Philosophers and Scientists back then, most of all what they discussed where base on speculations and assumptions no detailed facts to back them up and of a truth few of their assumptions are correct. It's not bad to assume on things but consistent assumptions without detailed facts can aswell become a disadvantages and create consequences of actions.