Thank you so much!!
Yes, you can predict where it lands: It depends on the weight difference you cause and the 'column'.
If you drop a brick ok a left column, causing it to get down, the top brick on the right will fly to left as many 'columns' as the weight change was. So, if the keft column was at 5, the right was at 7 and you dropped a brick weighing 3, the other brick will fly just 1 step...which is actually the column you dropped on...just as an example :D
The further you proceed in levels, the more possible that a "heavy" brick can fly around. This then can result in the brick being transporter over and over ;D