I've let my kids use smartphones since they were five or six, and honestly, I don't see the harm if you set boundaries around time and content. My daughter now uses her tablet to look up dinosaur facts and even taught herself basic coding from a kids' app. Meanwhile, my neighbor bans screens entirely until age twelve, and her kids seem more anxious about missing out than mine are. But I wonder if I'm just rationalizing my own convenience—do the benefits of early tech exposure really outweigh the risks to attention and sleep?