Such activity is also not peculiar to primates. Consider the recreational inquisitiveness of a housecat allowed to freely wander the neighborhood or a pet pooch that, claiming the same rights as its feline brethren, rushes through a cracked door. Be it to feed mind, body, or spirit, when mobility and curiosity meet, a-hunting we all will go. Likewise, deliberate walking takes on many forms. Pilgrimages, another common form, often have more than their holy destinations in mind, especially when the path taken was first worn by the feet of the saint-in-question. Yet, one need not have so high-minded a reason for traveling by foot. Nor is it necessary to wend ones way through uncommon terrain or streets. Modes of observation also have much to do with the qualities of the particular mode of travel and there is a distinct difference between being a passive passenger and a driver. Mickey, you are usually the captain of your ship when walking. Likewise, stopping or changing direction while on foot is simple and second-nature compared to the complicated series of actions one must go through to do the same in any sort of vehicle. Failures of observation can be deadly, with reaction time and control decreasing in proportion to speed. Because of this, the faster you go, the more you information you must filter out. Thus, you may be hyperaware, but only of what is important for safety and direction. All else becomes background in a haze of hyper self-consciousness. This is not to say that walking does not require observation of this sort, only that it is so slow and comfortable a form of travel that one can be fairly oblivious and still fairly safe. For instance, the walker is likely to realize they are approaching a bad part of town and to react before they even reach it. While driving, however, you may be several blocks in before you decide it would be prudent to turn around and find another route. Hyper self-consciousness tends to accompany upward mobility as well. But back to the topic. In deliberate walking, one strives toward a hyperawareness of the surroundings and, in doing so, becomes even more conscious of safety. The color and context of the sidewalk becomes as apparent as the height of the crack that might trip you.