Listen, set boundaries, and point them where to go.

“I have a friend who thinks vaccines cause autism,” writes Nina. “What can I do?”

“Having more stem cell activity is good for regeneration, but too much of a good thing over time can have less favorable consequences.”

Welcome to the Big Think debut of The Nightcrawler — a weekly newsletter from Eric Markowitz covering tech, innovation, and long-term thinking.

A battle between different kinds of love.