Each Chess piece has rules governing what it can and can't do. As one considers moving a bishop he recalls the rules relevant to it. Chiefly, that it can only move diagonally, though in all four diagonal directions, and even across the entire board when possible. Upon picking up a pawn, he remembers that it's limited to moving forward, and even then, in most instances, only one space at a time. As one looks at the queen, the details of its versatility come into mind.Every skateboard trick also has its own 'rules' - its technique - that's specific to it. As one perform an Ollie, he recalls the foot placement and sequence of movements necessary for its performance. And, as one performs a varial flip, the details pertaining to it are brought to attention, etc.
If a Chess player draws on the rules for a bishop when moving a pawn, his opponent will quickly protest. In skateboarding, however, the use of the wrong set of rules for a trick is not so conspicuous and can pass unnoticed. This is particularly the case when performing a trick that's similar to another. For instance, a frontside heel flip and a front side varial heel are quite similar. The difference being that in the former one's body turns 180 degrees with the board, while in the latter, it remains facing the same direction. It's possible for a skater to subconsciously confuse the 'rules' of these tricks and to fail landing either one as a result. It is therefore important for a skater to delineate the boundaries of each trick so that they remain separate and do not interfere with one another.
This principle applies to life in general. The 'rules' governing how we relate to objects or people continually changes based on the context. Thus, the 'rules' for handling our personal possessions are not the same for handling those belonging to others. Similarly, the way we may speak to individuals that are unmarried (unoccupied), significantly differs from how we should relate to those that are occupied. It's important that we keep the various sets of rules separate from one another so that they do not creep into each others territories. Throughout my life I've witnessed people get themselves into serious trouble because they unintentionally drew on the wrong set of 'rules' for the occasion.
However, skating differs from chess. In chess one cannot blend the rules of different pieces to form a new piece. In skateboarding, however, one may combine tricks together to form new ones. Indeed, this fact describes much about how modern day skateboarding evolved. This is also why skateboarding allows for so much creativity. Hence, as much as it's important for a skater to have clear boundaries separating the rules unique to each trick, the boundaries should not be so rigid as to preclude creativity.
However, aren't these mutually exclusive demands: should there be solid divisions between tricks or not?