This seems obvious to non-sales folks: why would you like to a potential customer about what you're selling? But for some reason, it's common enough that every

This seems obvious to non-sales folks: why would you like to a potential customer about what you're selling? But for some reason, it's common enough that every software engineer I've ever known has experience with salespeople attempting to sell things that aren't ready or don't even exist. When customers push back, Sales comes to engineering with "we can't make this sale until we've built X. can you have that by Friday so I can get this deal signed?"