Dave Chase said:
To the Roman (and a few other cultures) taking terrorities meant taking slaves. To keep slaves in line you have to keep them so busy that they are too tired to revolt.
To replace the slave with machines you would have to either accept the slaves as part of the citizenry or kill them or send them back to where you got them from. But remember some of the slaves had been slaves for many generations so that they had no place to call home other than as a Roman slave.
If you forced the Romans to start using machinery instead of slaves they would probably started having lots more games, gladitor games that is.
<sigh>
You don't know much at all about Roman slavery, do you?
There's no reason why you should, of course.
However, your statements above are ... completely wrong ... because of your lack of knowledge.
"To keep slaves in line you have to keep them so busy that they are too tired to revolt."
Well, actually, no.
The Romans suffered exactly
one major slave revolt - that of Spartacus - and that one didn't get underway because the Slaves didn't have enough to do. Read about it.
Roman - indeed, all Ancient - society was based on subsistence level agriculture and the upper classes (including the government) acquired their wealth through the
oppression of the poor (see G E M de Ste Croix's classic
"The Class Struggle in the Graeco Roman World" ... be warned, he's a Marxist, but his analysis is quite interesting and detailed).
In fact, the ongoing trend throughout the Republic and into the Empire was to increasingly oppress and disenfranchise the poor ... so that, by the later Empire (4th and 5th centuries AD) we have the bulk of the poor tied to the land by Imperial edict and rated as "coloni" which was, more or less,
effectively a serf (from the Latin "servus" = slave).
The reason for the existence of slavery and, indeed, the connecting reason for the oppression of the poor by the government and the wealthy was, quite simply, a result of the extremely low levels of agricultural (and other, but mainly agricultural) productivity.
Evidence strongly suggests that crop yields in Classical Europe were about 2-2.5:1 (i.e. they'd sow 1 kilo of seed and get 2-2.5 back), which is extremely marginal (you need to keep 1 kilo of the crop for next year's seed, leaving only 1-1.5 kilos for consumption) ... agricultural improvements during the so-called Dark Ages raised this to 3-3.5:1, and, frankly, this didn't make life a whole hell of a lot less marginal and subsistence level for most people (= the poor).
With such low levels of productivity the only way to accumulate wealth or capital was by s****ing the poor ... hence the slow but inevitable progression from free citizen farmer to serf ... or by having a class of people who could be "paid" an absolute minimum even below what a nominally part-free colonus would expect ... that's where slavery comes in.
"To replace the slave with machines you would have to either accept the slaves as part of the citizenry ..."
Which is more or less
exactly what the Romans
did. (More on this below)
"But remember some of the slaves had been slaves for many generations so that they had no place to call home other than as a Roman slave."
Like I said, in the kindest possible way (really

), you don't know anything at all about Roman slavery, do you?
This is so wrong it isn't even close to being vaguely related to being right.
Firstly, Roman slaves, by and large, were segregated into two groups - Household slaves and Estate slaves. The former were very likely to be able to gain their freedom either by purchase or as a reward for service - and, even if they didn't, might be able to breed ... the latter, well, they were segregated. Males kept well away from females (who would mostly be household slaves anyway) and were generally not, therefore, allowed or able to breed.
It was evidently somewhat rare (but only somewhat) for a slave to be a slave for "generations" ... what actually happened was, as the empire stabilised its borders, and the number of slaves dropped dramatically, there was an economic imperative to increase the amount of cheap labour ... but the Romans found (as slaveholding cultures mostly do, even in the medium term) that slave labour is worth spit ... the worker has to have
some gain from the fruits of his/her labour or they work (on classical figures) at somewhat considerably less than half the effectiveness of a "free" (or at least "servile" = serf = colonus) worker.
So what happened was that "slaves" were given a plot of land to work and allowed to marry, and, effectively and slowly, turned into serfs ... with more rights than an estate slave (the Roman contract form for purchases of slaves was the one they used for the purchase of cattle and other livestock) but less than a nominally free man (though the tendency was to reduce the rights of the latter so that the difference wasn't great by the 3rd century on, if not sooner) and make them, effectively, sharecroppers.
In return, since they were getting a larger (but still tiny) share of the fruits of their labour, their productivity shot up to the same levels as for "free" workers.
Much the same happened in Anglo-Saxon England, where slavery basically died out and the slaves were freed but turned into Serfs (who, as we all know, weren't really free ... but weren't slaves, either) and, when the economic imperatives changed in the 13th-14th centuries (under the Normans, who certainly were even
less altruistic than the Saxon lords!), they moved away from serfdom to hiring day labour fairly rapidly!
Slavery, indeed, is rather more complex than most people are aware (and, sure, given what is written about it in most High School ... and, indeed, even survey type College/Undergraduate Uni leve ... textbooks, that's not at all surprising).
"If you forced the Romans to start using machinery instead of slaves they would probably started having lots more games, gladitor games that is."
Hmm. You don't know much about the "Ludi et circenses", either, hey? :wink:
Suffice it to say that the "games" were also much more complex and, indeed, the gladiatorial contests were not all that popular, relatively speaking.
The Colosseum held somewhere between 50-70,000 spectators, the three Hippodromes in Rome held (between them) around 3/4 of a million spectators.
The big money was on the horses, just as it is today ;-)
And the Charioteers were the superstars of Roman entertainment.
Phil