# #lifestyle_design > 2 public memos tagged #lifestyle_design on MythOS. ## Links - [Tag Page](https://staging.mythos.one/tag/lifestyle_design) - [MCP Server](https://staging.mythos.one/api/mcp) ## Memos - [playtest](https://staging.mythos.one/me/brianswichkow/a3290f): A playtest is the process by which a designer tests for bugs and other design flaws before bringing their concept to market. Playtesting originated in computer, board, and role-playing games, where... - [Lifestyle Design](https://staging.mythos.one/me/brianswichkow/d50f7c): Lifestyle Design is a term popularized by Tim Ferriss in The 4-Hour Workweek which describes ownership of ones environment to attain their ideal experience in life. Ferriss later cited his use of...