01) Create or find a platform at-least 5 blocks wide to build on
02) on the far left block place a rail basic pointing left (R1)
03) in the center place a rail basic pointing up (R2)
04) on the far right place a rail basic pointing down (R3)
05) place an activation module (A1) on top of R2
06) place a not gate (N1) on top of R3
07) place an activation module (A2) on top of N1
08) connect A1 to R1
09) connect A2 to N1
10) connect N1 to R1
11) activate A2 - nothing should happen beyond that
12) deactivate A2 - N1 will become active and R1 should change directions to match R3, but doesn't
13) activate A2 - N1 will deactivate and R1 will now change directions to match R3 even though it shouldn't
14) activate A1 - R1 will change directions to match R2 just as it should
15) deactivate A1 - R1 will not change just as it should