Or...maybe humans are simply more optimized determined by how their brain approaches a problem, rather than the actual facts about the problem? The subjective reality isn't meant to be as an
actual fact that we are changing the world by thinking about it. It is a suggestion and a recognition. If one suggests to one's brain and even recognizes it as so, then the part where it might be coming in is a creation of behavioral changes, which, in turn, lead to your desired outcome. The definition of "subjective" reality, and the reason it has "subjective" in it, means that's how one views the world, not how it actually is (but, of course, how it actually is is no concern to you, because to you the actual world
is your subjective construction).
Of course, it can be likened to prayer. If you pray that you will be able to make an extra $1,000 this month, then regardless of prayer, intention, or any other conscious desire, you will still unconsciously (or perhaps less consciously) strive for that goal. So, even if you don't make an extra $1000 that month, but you do in six months, that will probably be because you strived for the accomplishment regardless of any prayer or intention. Of course, you are likely to construe your extra $1000 as a result of a reality you created by thinking about making the $1000. However, note that it took six months. Thus, you attributing it to that sixth month, but not any months before it; literally, throwing away any knowledge that doesn't model your desired reality (e.g., prayer or intention will create this achievement for me).
In other words, prayer or intention might affect your behavior, and hence, the outside universe. However, it will (obviously) not plainly initiate the result into your reality. It is a tool, one that can work extremely well if used properly, but a crane won't build a skyscraper on its own.
EDIT: One thing that's really tricky about this is that you must
convince yourself you are able to consciously affect your reality. Thus, you can't be tempted to doubt it or adopt some other view of reality, or it might lose its effect. Literally, you must convince your brain something is true, then forget you merely convinced your brain so (and never actually derived so). Thus, if someone adapting a subjective reality claims "No, no, this isn't changing my behavior and then changing you. My construstivist thoughts are
literally,
no-doubt-about-it creating you.", then there's the catch-22 that there's no way they
couldn't claim that, or else their subjective reality viewpoint would be useless. So, it probably wouldn't be too wise to concern yourself with people (that is, regarding this specific subject) who actually claim to be changing the universe through an intention or desire, because they
must claim, and
must believe it. Otherwise, it wouldn't be "subjective", and it wouldn't be an "intention".