My comments:
– One must be careful when dealing with crypto-currencies because you need to ask yourself who is controlling the huge amount of electricity needed for bitcoin’s blockchain verification or who is controlling the huge mining operations needed for that.
– Simon Parkes said that there would be alternative, better ways to use cryptos than just using “bitcoin”, appearing between January and March 2018. I think that points to the rise of proof of stake mentioned in this post.
– “Service to others” must be the keyword for 2018 as “Service to self” is fading away rapidly.