Knowledge is built, not found. People make it together through language, culture and interaction, so it always carries its context.
Key thinkers: Peter Berger, Thomas Luckmann, Kenneth Gergen
The longer story
'Constructivist' is a slippery term—this card means social constructionism (Berger & Luckmann), not Piagetian learning theory or radical constructivism. The claim: knowledge isn't sitting out there waiting to be discovered—it's actively built through social processes. Communities create what counts as true through argument, practice, and negotiation. Scientific facts are constructed in labs; artistic value is constructed in art worlds. This isn't saying nothing is real; it's saying knowledge is a social achievement, not a mirror of nature. If you want to understand how a genre came to exist, or how certain practices became 'best practice,' study the construction process.