Another example:
I was at a hackathon and met this kid who wanted to build a wristband for domestic violence victims so they could push a button and call for help when they were being abused.
Great idea, he wants to use his tech knowledge to help abused spouses! That's fantastic! Nothing wrong with that and it should be supported. But since he has never experienced being an abuse victim, nor did he consult any, he didn't realize what a useless idea this is. (As soon as the abuser knows what the device is, you think they will allow it in the house, let alone take heavy retribution for buying it? Even if it was a subtle/hidden device, being caught with it would mean even more abuse.)
Heart is in the right place, but intellectual arrogance needs some dialing in.