Some folks don't usually calculate their risk before taken it, they always learn from the outcome of that risk they took , because of this mindset the higher the risk the higher the return. I have been there and it doesn't usually ends well .
Most time usually end with regret , taken proper risk will give enough space to learn , due to poor risk management that's some people still go all in , in gambling they don't think about the risk that's attached to taken such Action .
Those that take risks without calculation are just gambling blindly thinking that gambling depends entirely on luck, and instead of taking gambling for what it is and not to risk a dime without adequate calculations and knowledge level that gives guaranteed winning even though there is nothing like guaranteed winning, but at least something that put you closer to winning, that is what calculated risks taking means.