The message
from Jason Pope contains these words:

/snip/
Was it fitted as a security device?


Of course. Billy goats cause a lot of damage to roses, fruit trees,
raspberry canes etc if they get out.


ie no it wasn't!
A security device is used to prevent human intruders getting in!

Your lack of knowledge of English is only eclipsed by your ignorance of
physics.

--
Rusty Hinge