At the outset of the week, you are willing to take the time to get things right. Being more calculating isn't necessarily a bad approach. But be sure to offset your interest in the hard data with an interest in the people you work with. You never know what you might learn from a work partner, especially on wednesday or thursday. When it comes to the skills of your colleagues, you have impressive resources to draw upon. At the end of the week, none of the things that seemed so clear earlier are going to be clear at all, but that doesn't mean you're on the wrong track. Persevere.