The very essence of determinism entails 'could not have done otherwise.'
That is what many people have traditionally claimed to be the essence of determinism. But it is a false claim, as we've demonstrated.
The "very essence" of determinism is actually causal necessity. Causal necessity is logically derived from simple cause and effect. If A causes B, and B causes C, then, if A happens both B and C will necessarily happen.
So, did A "cause" C? No, not directly. B is the direct cause of C. This distinction is necessary if the notion of causation is to be intelligible. For example, did the Big Bang "cause" me to choose the salad instead of the steak for dinner? Of course not. It was the bacon and eggs I had for breakfast, and the double cheeseburger I had for lunch, and my desire to eat more fruits and vegetables that caused me to choose the salad instead of the steak for dinner. These concerns that caused my choice, were my own concerns.
The Big Bang had no interest in what I would order for dinner. To suggest it "caused" me to order the salad instead of the steak is nonsense.
I could have chosen the steak, but I wouldn't have chosen it under those circumstances. The fact that I would not order the steak never implies that I could not order the steak.
In fact, if I had cantaloupe for breakfast and a salad for lunch, then I definitely would have ordered the steak for dinner.
You see, no matter what I actually ordered, I always had the ability to order the steak, thus it was truly something that I could have done.
Fixed by antecedents entails 'could not have done otherwise.'
I'm afraid not. Fixed by antecedents entails only that we "would not have done otherwise, even though we could".
Determinism and not determinism is a contradiction.
Exactly. So stop drawing false implications and let determinism simply be determinism, the reasonable belief that all events are reliably caused by preceding events. And stop pretending that we are not among the events that reliably cause future events.
If the world is under the sway of determinism...
Obviously the world is not "under the sway" of determinism. The world simply operates deterministically, that is, by the reliable and natural interactions of the physical objects and forces that make up the world.
Determinism itself is neither an object nor a force. It exercises no control. It simply "sits in the corner taking notes on our behavior", such as the fact that my earlier choices for breakfast and lunch made my choice for dinner inevitable. Determinism itself never determines anything. But we determine lots of things.
You can't have it both ways, determinisms entailed/fixed events and 'could have done otherwise' is undeniably a contradiction.
I DENY that there is any contradiction between determinism and the ability to have done otherwise. Hmm. That was simple. I guess you're wrong again about it being "undeniably a contradiction". I chose the salad even though I could have chosen the steak.
I'll leave the dictionary definitions here in case you want to read them again.
Definition of literally
1
: in a literal sense or manner: such as
a
: in a way that uses the ordinary or primary meaning of a term or expression "He took the remark literally." a word that can be used both literally and figuratively
b—used to emphasize the truth and accuracy of a statement or description "The party was attended by literally hundreds of people."
c
: with exact equivalence
: with the meaning of each individual word given exactly "The term "Mardi Gras" literally means "Fat Tuesday" in French."
d
: in a completely accurate way "a story that is basically true even if not literally true"
By "literally" we simply mean the standard meaning of the word itself, in the absence of any figurative sense.
The standard meaning of the term "can" is:
Definition of can
1a
: be physically or mentally able to "He can lift 200 pounds."
b
: know how to "She can read."
c—used to indicate possibility "Do you think he can still be alive?", "Those things can happen."—sometimes used interchangeably with
may
d
: be inherently able or designed to "everything that money can buy"
e
: be enabled by law, agreement, or custom to "Congress can declare war."
f
: be permitted by conscience or feeling to "can hardly blame her"
g
: be made possible or probable by circumstances to "He can hardly have meant that."
h
: be logically or axiologically able to "2 + 2 can also be written 3 + 1."
I was physically and mentally able to order the steak. So, "I can order the steak" was literally true.
Definition of could
past tense of CAN
—used in auxiliary function in the past "We found we could go.", in the past conditional "We said we would go if we could.", and as an alternative to can suggesting less force or certainty or as a polite form in the present "If you could come, we would be pleased."
I was physically and mentally able to order the steak. So, "I could have order the steak" was literally true.