To a human in our society (and probably all others), cage bars are more than a barrier. They represent a loss of freedom, eternal confinement, lack of dignity, and criminality, among other things. This is why a cage can provide the same amount of space, but people will feel better ...
The meaning we find in this star is as an indicator of the right time for making moves, entering upon new ventures, and a likelihood of general success in enterprises if Sadachbia is well placed and aspected on the horoscope. Ptolemy did not record a planet simile for it, but something...