Contradictions abound in street photography and there seems to be no “one way” to approach it, no less define it. From a content perspective, it's a contained narrative: a story or the impression of one captured within a single frame. From the photographer's standpoint, it's the epitome of "be quick, but don't hurry."
The ultimate contradiction is the question of intent, which can be hard to express in situations that can be delightfully random. Street photography captures the tension between things. Between subjects and their environments, the flash of an unexpected moment or the rhythm of something inherently static or ordinary. Those tensions are often revealed later in the editing process, not at the moment the photo was captured—even though I “saw” the image instinctively through the viewfinder when I tripped the shutter.