Author Jonathan Taplin is here to talk about his book, “The End of Reality” and the four billionaires who are trying to bring on that end. And speaking of ends, we’re on the receiving end of your thoughts, and they go straight to our head. It’s “Mailbag! Concussion Edition.” GUEST Jonathan Taplin jontaplin.com HOUSE BAND Casey Bozell @keepclassicalweird SPONSORS Go to Quince.com/nobody for free shipping on your order and 365-day returns! Go to HelixSleep.com/Paula for up to 30% off all mattress orders AND two free pillows! Learn more about your ad choices. Visit megaphone.fm/adchoices