your judment for this is
To that point
To that point
After that point; thereafter; from here on out.
Makes his/her point
5 3/10 5 30/100 five point three ect...
No
There are many smart ways in which you can convey your message that you messed up. Some options would be to say you made a mistake, you were in error, or you failed in your attempt.
Another way of saying "selling point" is "unique selling proposition" (USP). It can also be referred to as a "key feature" or "value proposition," emphasizing the aspects that make a product or service appealing to potential customers.
At some point in time can also be expressed as "eventually" or "sometime down the line."
Yes
That's one way of putting it. Tact is the strategy of saying what you have to say in a way that is calculated to avoid offending the person or people to whom you are saying it.
The "Smart Way" is better.