LOOK, l MADE A ROBOT! WHAT DOES IT DO? it just moves FORWARD. WHV IS IT LOOKING BACKWARDS WHILE MOVING FORWARDS? VEAH, BUT THEN IT :an'T know where IT'S GOING. SO IT CAN KNOW WHERE IT'S BEEN! WELL, IT CAN'T SEE IN FRONT OF IT. IT GUESSES WHERE IT'S GOING BASED ON ITS TRAJECTORV! THAT'S