Max Nisen, Bloomberg Opinion health care columnist, on Pfizer agreeing to delay price increases after Trump called the company out.

Vacit Arat, co-founder and President of HIA Technologies Inc., on creating Digital Avatars, which can carry on a sophisticated conversation with humans on almost any subject in any language.Carl Weinberg, Chief Economist at High Frequency Economics, on how China could hurt the US once it runs out of imports to tax.David Garrity, CEO of GVA Research, on how blockchain is being implemented in the real economy and outlook for Twitter.