• The opposite of “not sure” is “not unsure” even though both phrases describe uncertainty.
• It’s like “partly cloudy” and “partly sunny” – decades ago chambers of commerce everywhere were pushing local media outlets to go with the more positive weather forecast wording even though the actual result they were forecasting was the same.
• When in doubt, choose “I’m not unsure” over “not sure” when faced with a goal and put that optimism to work for you.