Short Term Trading XMAS Weekend Lounge: 22 -26 Dec, page-105

With around 440 nuclear reactors online worldwide, 5000 reactors to power blockchain transactions sounds a little exaggerated.
If I have a choice of Visa or PayPal for payment I will always choose PayPal. I feel a little uneasy giving my credit card details to a vendor and prefer to have PayPal hold my details and authorise them to make a payment.
I have never had to deal with credit card fraud but have heard of people who have and though they may get their funds returned, the inconvenience is very stressful. Just several weeks ago a radio presenter told of having his Visa account robbed. I believe blockchain is secure and will only be more so in the future.
I think we are heading to a one world currency and it is already here. And it is not the U.S. dollar.
Visa and banks are of course opposed to blockchain because they will lose income. People who work for or have interests in the banks, as the writer of the 5000 reactors article admitted to, will be running a campaign to slow down and destabilise the advance of blockchain. The banking business is very, very powerful and will fight however they can. Banks sit at 3 and 5 in the top 5 earners in Australia.
Blockchain will not go away and is gaining momentum.

This is all IMO so please take with a grain of salt.

http://www.world-nuclear.org/inform...eration/nuclear-power-in-the-world-today.aspx
https://en.wikipedia.org/wiki/List_of_companies_of_Australia