In fact, seen that way, a bomb isn't really a hoax: it's just a tangible symbol of a greater truth.
If a political scandal needs a tangible symbol remember a certain blue dress?
Bill "saw the chairman's gavel as a tangible symbol of a member's rights."
Perhaps this is a tangible symbol of the close connection between the two nations in the border area.
The activity here is the tangible symbol of a huge new Federal investment in biomedical research.
They shall merely serve as a tangible symbol for the seriousness of the exercise.
It would also have been a tangible symbol of New York City's continuing role as an international financial center.
Other Kents before him had left tangible symbols to show their faith in the family and in its future.
For example, a cup can be used as a tangible symbol to represent the activity: "drink".
Two-dimensional pictures, such as photographs and line drawings are the most abstract type of tangible symbols.