I hear the statement: "Technology T is Y years away", all the time, it is usually is just speculation and wishful thinking. I would rather people replace that

I hear the statement: "Technology T is Y years away", all the time, it is usually is just speculation and wishful thinking. I would rather people replace that overused line with the statement: "Technology T has barriers B, C and D preventing its successful implementation and mass production". Leave feel-good speculation out of it and focus on overcoming the obstacles.