Those are good questions. I think after all this discussion it has boiled down to the basic premise of .. braking or avoidance. Avoidance probably would have ended well, but I did not want to be "that jerk" who blew past a pedestrian in the street even though he was crossing when there was a green light for the incoming traffic. But now I might reconsider that...
The specifics of this situation was that I was in the right lane (of two lanes) on King Street. There were a lot of people around because the baseball game was getting underway. I was only out to enjoy the weather and was not riding aggressively at all, I was strictly in a "cruising down the street" mindset. I was probably in second gear, but with my triple, i still had more than adequate power on tap if i needed to use it.
As I was about to enter the intersection, i saw the guy on the phone step from the curb into the street. I also saw that he was on the phone and not had looked for incoming traffic at all and was quite likely unaware of me approaching.
in my head at that split second, it was not "an emergency" just yet - i knew i had to take action.. but there was still enough distance to sharply cut speed and assess the situation to decide whether to move left or come to a complete stop.
The precise time i hit the brake, was on the very last white stripe of the crosswalk. I went down immediately and slid completely across the intersection. Me and my bike came to a stop at the opposite crosswalk. There were many people there at that corner and two of them came out to help me get my bike to the side of the road.
So as people here mentioned. Me not knowing whether there was a car to my left factored in my decision not to try to swerve or track left past the pedestrian.
I would go to say that because I had been in that "just rolling down the street at 25mph" mentality, I was not excercising all the situation awareness I should have.. i was only paying attention to what was happening ahead of me.
so as someone mentioned earlier, my main takeaway besides working on emergency braking technique, is that.. 1) situations can develop even on the most pristine of days when you're moving at a rather leisurely pace, and thats no excuse for not being fully aware of whats happening around you.
i also will immediately consider all sorts of road paint as "suspect" and treat them as potential low-traction hazards.
and lastly - as mentioned by a few, whenever approaching an intersection, especially with many pedestrians around, i'll be mapping out a path through the intersection if they were to come into the street.
There is a whole lot of input in this thread focusing on the technique(s) related to emergency braking. This is a obviously a very important skill, but learning the judgement to avoid situations that require emergency braking is a hugely important skill.
Was the pedestrian already in the road before you saw him? What portion of the road were you riding in? Were you on the right side of your lane? Center? Left?
You also mentioned that you didn't know if there was a car to your immediate left. As mentioned here already, Situation Awareness is a huge part of motorcycling. This is not limited to the objects in front of you, but also those to the sides and rear as well.
What will you do in the future to avoid the need to use emergency braking to avoid a similar situation?