romaine: it is always great to get your insight, emily oster. we will catch up with her soon, i am sure. as a reminder to all viewers, you can scope -- subscribe to our weekly podcast called what you missed this week available wherever you listen to podcasts. caroline: that does it. taylor: that doesn't for the week, but stay tuned, bloomberg -- that does it for the week, but stay tuned, bloomberg technology is up next. announcer: from the heart of where innovation, money, and power collide, in silicon valley and beyond, this "bloomberg technology" with emily chang. ♪ emily: i am emily chang. this is "bloomberg technology." i will speak with our

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janai norman talked with the author emily oster. hey, janai. >> reporter: hey, george.gh the clutter and gives family the bottom line to help them make better decisions. her books on pregnancy and toddlers skyrocketed her to parenting world fame and now she's back crunching the numbers on topics that keep parents with school age kids up at night. rachel is debating getting her 6-year-old daughter a cell phone. >> here you go. >> reporter: she likes the safety a phone can offer but not everything else that comes with it. >> i don't want her to have access to apps or facebook or social media or even the internet. i really just want like an old-school cell phone that can make phone calls and tell me where my child is. >> reporter: it's kid conundrums like this economist emily oster examines in "the family firm" with the best-selling author doing the math homework on big kid issues from picking the right school to screen time and giving parents tools to approach them like a business executive. >> when you're parenting older kids, there are two big challenges, one is the day