What sorts of things could have realistically been invented much

>>53191616
Pasteurization
Morse Code
Brace drill
Windmills
Already present in 600 AD:
Stirrups
Negative Numbers
Wheelbarrow

>>53191616
Oh cool I'm not the only one who thinks about this. I would say that gunpowder could have come about earlier than it did. Guns would still trail behind a fair bit due to the need for more reliable metallurgy for barrels but large cast iron cannons probably could have come about earlier due to the strength from their bulk.

I wish I had something more meaningful to add because I'm very interested in exploring alternate histories for the purposes of game design. Though I'm interested in later periods, around the industrial revolution, and how things may have developed sooner or later than they did for us.

>>53191616
Hot air or hydrogen balloons. Maybe airships not long after those.

The Romans were actually somewhat close to reaching the industrial revolution. The main reason the didn't/couldn't was because they relied too heavily on slave labor that was cheap and effective, thus there was no incentive to invent automation devices.

penicillin, but it is questionable if we could have known of it's good properties in the middle ages without all of the research of the 19th/20th century. Plus horrifying things would happen to our history if we effectivley invented antibiotics in the early ages but had no means to perpetuate them, at one point diseases would get stronger than the shit we can produce to combat them trough survival of the fittest.

>>53192451
>Brace drill
That's not on the usual boring (heh) list! That'd actually have a pretty big impact on architecture, being invented earlier.

>>53192602
> penicillin... horrifying things would happen to our history
That's actually a pretty good set up for a campaign setting. We hit something like the late middle ages (plate armor exists) or even the early industrial era, inventing penicillin along the way, and then drug-resistent superbacteria kill almost everyone. It's worse than the black death.

So now the survivors have late-medieval ruins (or even early industrial ones) to go exploring as they pick their way back up through the dark ages.

>>>/his/

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>>53191616
This thread again?

I'll repeat: the alternate history forum is better for this.

You can find about pykrete, how to make carbon steel at the same time Jesus died, heliographs, roman washing machines...

https://www.alternatehistory.com/forum/threads/what-invention-or-discovery-happened-oddly-late-or-early.160434/

https://www.alternatehistory.com/forum/threads/pre-industrial-era-inventions-that-could-have-been-invented-in-the-middle-ages.355702/

https://www.alternatehistory.com/forum/threads/not-invented-here-successes-and-missed-opportunities.358595/

https://www.alternatehistory.com/forum/threads/department-of-overlooked-technologies-unusual-effects-and-forgotten-weapons.85399/

https://www.alternatehistory.com/forum/threads/technologies-that-arent-inevitable-in-alternate-timelines.240702/

https://www.alternatehistory.com/forum/threads/alternate-technology.3874/

https://www.alternatehistory.com/forum/threads/alternate-technologies-redux.9644/

https://www.alternatehistory.com/forum/threads/ealiest-invention-tread.71234/

https://www.alternatehistory.com/forum/threads/inventions-that-could-have-changed-the-world.16852/

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>>53192517
Cast bronze and/or brass barrels then. Better yet, invent composite metal cannons like the chinese did.

>>53192602
>>53192737

As a microbiologist, I have to point out that that's not even close to how antibiotic resistance works.

>>53192602
>>53192737

The reason we have multi-strain resistant bacteria now is because we have an absolute shitload of antibiotic, and misuse many of them. We also do not have the capacity to make new ones very easily at all; almost all the antibiotics that we can feasibly discover are discovered, and the few truly new ones are reserved for careful use specifically because they don't want to give diseases resistance.

The reason resistance is a problem is because the way we have our entire civilisation set up is highly dependant on our exceptional ability to treat infectious disease. We have such a high ability to treat infectious disease because of antibiotics and vaccines, in the main. Without these you could still treat most disease but it takes vastly more direct and invasive treatment, much more care, much longer-term care, and the like. Tuberculosis, for example, can be treated relatively simply with the right antibiotics, or with many invasive lung surgeries over the course of months.

Effectively, we would be living with a civilisation that was built with a disease resilience we no longer have, and eventually we would collapse down to our actual ability to resist disease. Best case we are forced to radically change and plan our treatment of disease and healthcare which would require radical changes in many of our society's ways of doing things are colossal expense.

Or a superplague.

In a medieval world this is not relevant. They would have many people live due to antibiotics, and eventually they would stop working, but it would cause no population boom and thus there is no collapse to occur.