Originally Posted by WarpSpeed
It means someone is suggesting to do something that has already been tried, and has not been successful in the past. It could be in business or in a relationship. (Sometimes sports announcers use it, too.)
A business example: In the past year, two social media companies, Zynga and Facebook, have "gone public" (meaning they issued stock for public trading for the first time). In both cases, the value of the stock has gone way down since it was issued. Say some third social media company has an idea to go public now. We've been down that road before.
Relationship example: A man and a woman have two children, but the man and the woman fight a lot. The woman wants to stop fighting and suggests to the man that having another child might bring them closer together. The man could say, "We've been down that road before," meaning it didn't work the last two times. Everyone else would just scream "NO!" at them.
Thanks a lot, it was a complete description
I have two more questions
What is mean of sidelines ? for example she's staying on the sidelines
When should we use "pieced together" ?
for example "Have you pieced together how should we do that ?"
I mean when people use this
is it general ?