The human drive to invent new things has led to pathbreaking achievements in medicine, science and society. But our desire for innovation can keep us from seeing one of the most powerful paths to progress: subtraction. Engineer Leidy Klotz says sometimes the best way forward involves removing, streamlining and simplifying things.

Think about how often you hold back honest opinions of someone else because you don’t want to hurt their feelings. But there are times when this well-intended restraint can be a mistake. This week, in the second part of our series on failure and feedback, psychologist Taya Cohen helps us understand when — and how — to be honest.

All of us make choices all the time, and we may think we're making those choices freely. But psychologist Eric Johnson says there's an architecture behind the way choices are presented to us, and this invisible architecture can influence decisions both large and small. If you like this show, please check out our new podcast, My Unsung Hero! And if you'd like to support our work, you can do so at support.hiddenbrain.org.