Sorry it's taken me so long to reply to this, but--
The classic example of this is that if you were to be standing at the window, see a car in the street, look away and look back, and see the car is down the street, you eyes would tell you to conclude, and rightly so, "The car moved." Now--if you were to be looking out the window and see the sun straight overhead, go take a nap for four hours, rise, and see the sun further west in the sky, you might want to conclude, erroneously of course, that the sun moved because this is what your eyes tell you. So sense perception may not always lead you to the truth.
no subject
The classic example of this is that if you were to be standing at the window, see a car in the street, look away and look back, and see the car is down the street, you eyes would tell you to conclude, and rightly so, "The car moved." Now--if you were to be looking out the window and see the sun straight overhead, go take a nap for four hours, rise, and see the sun further west in the sky, you might want to conclude, erroneously of course, that the sun moved because this is what your eyes tell you. So sense perception may not always lead you to the truth.