IB Design Technology Topic C1.1: Responsibility of the Designer Key Definitions

Functional obsolescence occurs when a product wears out or breaks down over time and can no longer perform its original function. This can happen if replacement parts or essential services are no longer available, making the product unusable even if it's physically intact.

Obsolescence is when a product becomes outdated, unwanted, or no longer functional before the end of its useful life, often by design.

Planned obsolescence is when a product is intentionally designed to become outdated or less useful after a certain period. This is done to encourage repeat purchases, or to allow for new technologies or safety improvements in future versions.

Social obsolescence happens when a product loses value or usefulness due to external social, economic, or cultural changes, not because the product itself is faulty. This can include shifts in trends, technology, or user expectations.

Style obsolescence occurs when a product becomes undesirable due to changing fashions or trends. However, because fashion is cyclical, older styles can regain popularity—as seen with retro or vintage trends.

Technological obsolescence happens when newer technology replaces older technology, making the old version less useful or outdated. As a result, consumers switch to the more advanced, efficient option, and the older technology is no longer used in new products.