In many cases slaves had some degree of freedom of movement and could work and live in open society. Prisoners and penal labor are often paid some amount for their work.
In a penal setting, those incarcerated were found guilty of some crime defined by society. Usually, today, prisoners are required to work and receive some amount of pay for that work along with free room and board so-to-speak. Their term of imprisonment is set by the courts. Work is mandated because the alternative is far, far, worse for society.
Putting people in prison to rot and do nothing degrades their ability to reenter society. It creates more mental and physical ailments. So, to both keep the prisoner healthier work is required. Many prison systems require prisoners to get some education too, like a GED if they don't have a high school diploma, or drug and addiction avoidance education courses.
Slaves are unpaid. Slaves can be bought and sold as chattel. Prisoners cannot.
No slaves had no real degree of freedom of movement as it was all proscribed by their owner. Meaning an owner telling you, you are free to do certain things is NOT freedom as they control that thru permissions. So if you are saying their owner would allow some a bit of latitude in what they can do so to is that true of prisons and parole issues. I worked in a prison, as mentioned above and know first hand some prisoners were granted some freedoms.
So again the distinctions you are making are missing the point.
I AM NOT saying they are the exact same so you keep pointing out the differences is not addressing the point.
I am saying they are BOTH prisoners, meaning they do not have control over their lives for the time they are a slave or jailed person. They BOTH operate within the rules and confines of another persons dictates. The degree of difference in what that person in control allows IS NOT a meaningful difference to my point here. The point being the prisoner or slave does not have that control of their freedom or incarceration and the other person has it entirely.
I am saying that if you were taken in Roman or Greek culture :
- because your family owed money they could not pay
- because you stole something
- because you were captured in battle
- because you had the wrong skin color
In EACH AND EVERY INSTANCE you were a Prisoner and Slave. The labor you would do in EACH AND EVERY instance was slave labor.,
Do you disagree? Do you see why pointing out the difference of why they are a prisoner and slave (criminal, family debt, captured, etc) does not change what i said prior?