For one, the product--and all that it connotes--is visible.
The product is definitely visible.
The product is invisible, both physically and metaphorically.
No one thinks auditors should be able to speak freely.
Everyone should be able to catch a performance at the Gate Threatre or Abbey Theatre.
The system used to transmit the information must protect T&A data from unauthorized change.
A group of soldiers pour water on a fire.
You need your identification papers or passport to get into the gaming room.
I'm in the DC area.