1. Obsolescence: viewpoints and definitions

1.1 Manufacturer/supplier viewpoints

We need to distinguish between the viewpoint of product manufacturers and suppliers, and that of users (although manufacturers may themselves be users).

For the manufacturer, obsolescence is generally the result of a change in the use of a product; this change is itself the consequence of an evolution that may concern technology, regulations, user behavior, etc. The good then becomes obsolete, i.e. outdated, outmoded or outmoded. The good then becomes obsolete, i.e. outdated, outmoded or outmoded. It is therefore used less and less, until its commercial interest is extinguished, or its use is halted by regulatory bans or political decisions. Production is then halted, and the good gradually or abruptly disappears from the...