How can you loose the plot so much that you can hold that switch for 29seconds?????
because we/they and you are human.
That is the failing, and also the saving grace... as computers also suffer form the problem of being computers... ie divide by zero etc... BSOD... "wait one..." "re-syncing".
Bad design abounds in the B737, it is not a glorious bit of design, but hard to argue with the market, it has been effective.