What is the proposed idea/solution?
A keyboard shortcut (on Mac) to move from table to table. (Never touch the mouse. Never leave the keyboard.)
...
How does is solve the user problems?
Moving one's hands away from the keyboard to touch the imprecise mouse is time-consuming.
...
How was this validated?
Experience.
...
Who is the target audience?
Anyone that see the value of using keyboard short cuts to say time by not having to move off the keyboard.
...