Former U.S. Treasury Secretary Larry Summers says Bitcoin is here to stay!
Who is Larry Summers? is an American economist, he has held several HIGH level positions including former Vice President of Development Economics and Chief Economist of the World Bank (1991–93), Senior U.S. Treasury Department official throughout President Clinton's administration (ultimately Treasury Secretary, 1999–2001), and former director of the National Economic Council for President Obama (2009–2010).
He is a former president of Harvard University (2001–2006), where he is currently (as of March 2017) a professor and director of the Mossavar-Rahmani Center for Business and Government at Harvard's Kennedy School of Government. Larry in 2016 became a Senior Adviser to Digital Currency Group (https://dcg.co/) - GCG is the name behind several known Subsidiaries such as Grayscale, Coindesk and LUNO to name a few.

Why Larry's input is important? Larry has been in the private sector long enough to realize the merits of Crypto (not just the scarcity factor but the durability of the asset too. One might consider his comments well timed to counter Janet Yellen's comments recently against Crypto's.

Summary - I believe we need to have alternate view points voiced and heard in order to have effective dialog.