As said before if they are looking they will see you, if they are not looking they will hit you. simple.
Are you lot not reading what is being posted
@derrick Second part - you are right "
if they are not looking they will hit you" but most drivers
are 'looking' nearly all the time. So "if they are looking" they will see you
earlier if you're wearing clothing which increases your visibility. And this thread surely seeks to explore whether there are optimal ways of doing that using hi-viz or reflective clothing and peripherally otherwise, and the extent to which cyclists should adopt such an approach - the pros and cons.
"if they are not looking they will hit you" that is a fatalistic approach as you cannot influence this, other than lobbying for greater society/community efforts to eradicate use by drivers of mobile communications devices, to improve other driving quality thresholds, and to design roads with cyclists in mind (list by no means complete or exclusive). One could add to make the use of (dipped) car headlights a legal requirement at all time: this would make the cyclists' reflective option more effective in daytime.
Why things are seen (with the most important last):
Shape - Shadow - Shine (texture) - Spacing - Silhouette - Movement