但被冒險吸引的人必須確保明白自己即將面對的環境。新鮮食物稀少，酒精受限；英國南極考察局的住宿為多人共用宿舍；員工採七天輪班制。
Real game engines use this pattern (or its 3D cousin, the Octree) for broad-phase collision detection: the quadtree quickly identifies candidate pairs, and a more expensive narrow-phase check tests the actual geometry.
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You can set up Privacy Display to activate when you're asked for a password or PIN, or when you get a notification or open certain apps. So if (for instance) you tend to look at your banking apps when you’re on public transit and don’t want other passengers to see how much moolah you have, Privacy Display seems like a very handy feature.