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by gbea42d4
2327 days ago
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Does it work 100% of the time? Is it mathematically disproven, that it won't fail on any occasion? Is it mathematically proven, that every bridge is always appearing in the dataset after it is possible to drive underneath it? Or over it? |
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No map data supplier warrants that their data is free from errors, and even if they did the data could be out-of-date within hours as roads are being built all the time.
There is no proof - mathematical or otherwise - a sat nav won't switch off if you fail to plug it in. Neither is there any proof a bridge won't be closed due to roadworks, an accident, or other reasons.