Can one speck make a difference?

Of course yes, it can! Just think all of us (specks) to be computer monitor's pixel. What if 99% of the screen is white and the 1% or 1 pixel is differnt from others. It does make a differnce. Probably you are not the only spec thinking a differnt way - may be there are a few people who think like you and act like you at the same time. I can give you an example on this. I am an eco friendly person and instead of talking about the matter i like to bring things to action. I make sure i carry a coofee mug with me to avoid 'paper' cups, i take a walk whenever possible, and switch off the lights and fans when there is no one using it, close the tap tightly to avoid water draining, and many more. When you make all these your habit, the person living with you for sure will be infected with the same thought. :) so one speck doe make a change.