Technology Timeline: Possible improvements

[Avalancheon]

I like these additions to the timeline.

Thank you. Other possible candidates would be radar and liquid rockets. If you have any ideas, feel free to pitch in.

-Robert Goddard invents the liquid fueled rocket in 1926. (Reasoning: It paves the way for the saturn v, and the moon landing)
-Robert Watson-Watt develops radar detection in 1935. (Reasoning: Its another very important measuring device)

I think I have found a cite for the 2500BC date;

One of the earliest smelted iron artifacts, a dagger with an iron blade found in a Hattic tomb in Anatolia, dated from 2500 BC.

This is at least a thousand years earlier than other possible smelted artifacts, but it may be correct.

''Meteoric iron has been used by humans since at least 3200 BC, but ancient iron production did not become widespread until the ability to smelt iron ore, remove impurities and regulate the amount of carbon in the alloy were developed. The start of the Iron Age proper is considered by many to fall between around 1200 BC and 600 BC, depending on the region.''

The blade doesn't represent the beginning of an iron smelting industry. So just to be safe, the date should be changed to 1200 B.C.E.

Remember that the Encyclopedia Galactica is a work of reference that is imagined to exist more than 10,000 years in the future, at a time when archaeology on Earth can no longer be carried out. Any dates in the EG will be derived from the preserved data carried away from Earth during and before the Great Expulsion, and some of this would be debatable. Of course the completeists on Ken Ferjik would almost certainly keep a record of how 'reliable' any such historical data might be.

The reasoning here isn't bad, but retaining information we know is inaccurate maybe not a good idea? It gives readers the wrong impression and makes things complicated when we have conflicting dates for technology. What do you think?