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AI gives you confident answers about facts that may have changed. The publication date of any source is the first thing to check — including AI's training cutoff.
If you're researching social media use among teens, a 2018 study isn't useless — but it's missing TikTok's growth, a pandemic, and 8 years of platform changes. Old facts about fast-changing fields can mislead you.
The same applies to AI answers. Most chatbots have a training cutoff — usually 6-18 months before today. Anything that happened after the cutoff is invisible to the model.
The big idea: every source has a date. That date tells you how much time has passed for the world to change since. Always check it.
15 questions · take it digitally for instant feedback at tendril.neural-forge.io/learn/quiz/end-builders-research-pub-date-check
What is a training cutoff date for an AI chatbot?
A student is researching social media use among teenagers and finds a 2018 study. Why should they be cautious about using it as their main source?
Which subject area is MOST likely to still be accurate using sources from the 1990s?
When an AI gives you a factual answer, what specific question should you ask it?
A 2019 article lists the most popular programming languages. Why would this be unreliable for a 2026 job search?
A friend tells you they found a 'great deal' on a laptop from a 2023 review. What should you verify before buying?
Which health topic would require the MOST current information possible?
Why might citing a very old paper in your research be problematic even if newer papers also cite it?
What does it mean for a source to be 'stale'?
A political news article from 2022 discusses the 'current president.' Why would this be confusing for a 2026 reader?
You ask an AI about the population of a country and it gives you a number. What should you do before using this in a school report?
Which type of information from 3 years ago would generally still be considered reliable today?
A website lists the 'top 10 most valuable companies' but has no date visible. What should you assume?
The lesson describes some fields where old sources are still useful. Which is the BEST example from this category?
What does the lesson mean by 'always check the date' of any source?