About

History at its true size

Our Centuries shows human history as places and scale: where things happened, how long ago, how big they were, and the evidence for each claim.

Most history online is either a list of dates or a wall of text. We wanted something closer to standing in the place itself: the fort drawn at the size it really was, the line of time drawn at its real length, the letter shown in the words its writer chose.

How we check

  1. Evidence first. Every fact links to where it comes from: the research paper, the excavation record, the museum that holds the object, or the published translation. Encyclopaedias help us find sources, but we never cite them as one.
  2. Read the source, not a summary of it. Before a number goes on a page, someone has read it in the source we cite, and the date of that check is recorded on the sources page.
  3. Say how sure anyone can be. Every claim falls into one of three kinds, shown with these labels:
Evidence
Found, measured or written down at the time, and published by the people who found it.
Informed
Reasoned from similar places or later records. A good guess, and we say so.
Debated
Experts disagree. We give the main views, who holds them and why, and don’t pick a winner where the evidence hasn’t.
  1. Every “at least” stays in. Many ancient dates are minimums. We keep the words that say so, and draw them that way too.
  2. Show the working. Where we work something out ourselves, such as how many football pitches fit in a fort, the sum is printed beside it.
  3. Draw honestly. Maps and plans are drawn in code from published measurements. Captions say what is simplified, what is drawn by eye and what is left out.
  4. Fair on contested history. History involves real peoples, faiths and nations. Where it is disputed we set out each side in its own terms and cite who holds it.
  5. Correct openly. When we get something wrong, we fix it and list the change, with the date, on the corrections page.

Tell us if we’re wrong

Email hello@fallinghippo.com with “Correction” in the subject, the page, and what you think is wrong. A source helps a great deal. We read every message.