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’Else’ is not commonly used in English today but the meaning does fit. From Webster’s (1913):

Else, adverb or conjunction

1. Besides; except that mentioned; in addition; as, nowhere else; no one else.

2. Otherwise; in the other, or the contrary, case; if the facts were different.

“For thou desirest not sacrifice; else would I give it.” – Ps. li. 16.

After ‘or’, else is sometimes used expletively, as simply noting an alternative. “Will you give thanks, … or else shall I?” – Shak.

The modern universal keywords if, else, for and while are good because they are fairly short and thus quick to type.

Don’t even get me started on “elif”

If something were to be true, then foo.

Or if this other thing were to be true, then bar.

If it’s something else, then baz.

No. English has used else to mean "otherwise" since before computers came along. Wiktionary offers this quote from Call of the Wild (1903):

"He had never seen dogs fight as these wolfish creatures fought, and his first experience taught him an unforgetable lesson. It is true, it was a vicarious experience, else he would not have lived to profit by it."

https://en.wiktionary.org/wiki/else#Conjunction

There's also "or else", as made famous in crime dramas: "Meet me by the docks at midnight. Bring the money. Come alone. No cops... or else!" But in other usage it can of course be followed by something. "He had to get to work on time, or else he might be fired."

Article states else is archiac English but later says someone called it ignorantly incorrect English and suggested using "or".

Ive always assumed it was effectively "otherwise" but shortened to "or else" -> "else".

Given the alternative to use "or" as the first pushback I feel that acts as confirmation. I prefer else because "or" has implications in boolean and bitwise logic that else doesn't.

it was probably a rote translation of the German word ‘sonst’

> I can't use "else" as a conjunction in normal speech, only in computer programs.

sure you can. who's going to stop you?

what

If ... then ... otherwise ...

Fixed!

The English language origin is from programming if/then/else

> I can't use "else" as a conjunction in normal speech, only in computer programs.

Not true. Here's an example from 1876 in which "else" is used as a conjunction.

> My brother is poor, and I want to look as much like him as I can, else he may feel distant from me.

-- George Eliot ( https://www.victorianlondon.org/etexts/eliot/deronda-0047.sh... )

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Here's an example of "if ... else" from the 1914 translation of Crime and Punishment ( https://en.wikisource.org/wiki/Crime_and_Punishment/Part_IV/... ):

> Perhaps it will all come back, but now if you love me, give me up . . . else I shall begin to hate you, I feel it.