with Emily Oster (@ProfEmilyOster) and Hanne Tidnam (@omnivorousread) Are chia seeds actually that good for you? Will Vitamin E keep you healthy? Will breastfeeding babies make them smarter? There’s maybe no other arena where understanding what the evidence truly tells us is harder than in health… and parenting. And yet we make decisions based on what we hear about in studies like the ones listed above every day. In this episode, Brown University economics professor Emily Oster, author of Expecting Better and the recently released book Cribsheet: A Data-driven Guide to Better, More Relaxed Parenting, from Birth to Preschool, in conversation with Hanne Tidnam, dives into what lies beneath those studies... and how to make smarter decisions based on them (or not). Oster walks us through the science and the data behind the studies we hear about -- especially those hot-button parenting issues that are murkiest of all, from screen time to sleep training. How we can tell what’s real and what’s not? Oster shows us the research about how these guidelines and advice that we are "supposed" to follow get formalized and accepted inside and outside of healthcare settings -- from obstetrics practices to pediatrics to diet and lifestyle; how they can (or can’t) be changed; and finally, how the course of science itself can be influenced by how these studies are done.

In a followup to one of our most popular podcast episodes which originally aired in April 2017 (https://a16z.com/2017/04/03/cryptocurrencies-protocols-appcoins/), a16z Crypto Fund General Partner Chris Dixon returns to talk with Olaf Carlson-Wee of Polychain Capital in a free-wheeling conversation about the seven major trends they see happening in blockchain computing now as we shift from basic protocol design to pragmatic product launches: Improving developer productivity Scaling out versus scaling up On-chain governance Proof of Stake Networks, and especially their resilience to attacks 2017: year of of fund raising, 2019: year of launches Autonomous and re-mixable code Killer apps: distributed finance and beyond This conversation was originally recorded for our YouTube channel: https://www.youtube.com/c/a16zvideos The views expressed here are those of the individual AH Capital Management, L.L.C. (“a16z”) personnel quoted and are not the views of a16z or its affiliates.This content is provided for informational purposes only, and should not be relied upon as legal, business, investment, or tax advice. You should consult your own advisers as to those matters. References to any securities or digital assets are for illustrative purposes only and do not constitute an investment recommendation or offer to provide investment advisory services. Furthermore, this content is not directed at nor intended for use by any investor or prospective investor, and may not under any circumstances be relied upon when making a decision to invest in any fund managed by a16z. (An offering to invest in an a16z fund will be made only by the private placement memorandum, subscription agreement, and other relevant documentation of any such fund which should be read in their entirety.)Past performance is not indicative of future results. Charts and graphs provided within are for informational purposes solely and should not be relied upon when making any investment decision. Please see a16z.com/disclosures for additional important information.