> the ability to recall your vote, i.e. unelect, at any time would make your attitude towards your initial vote less serious

How do you know that about me?

> elections/unelections would cycle too fast to govern

Ok, that may be so, but without trying it we'll never know. You could implement this at the municipal level first, see how it works, iron out the kinks if any are found and then scale it up bit by bit. The whole idea that a politician can say anything and only be held accountable many years later is a pretty big flaw, possibly bigger than the flaw of having multiple election cycles until we find people that do keep their word.

>How do you know that about me?

Presumably you are human, no? The ability to undo a decision at any time significantly reduces the impact of the decision. How much effort do you spend deciding what to eat for lunch? How much effort would you spend if it's what you're going to eat for lunch every day for the next 4 years?

> Ok, that may be so, but without trying it we'll never know

Of course we can. Take the US dominant two-party system, and look at the approval rating for politicians. Look at how many times it crosses the 50% line. Some would only be in office for a few weeks before being replaced, but then who would replace them? What if the previous candidate has a better job already? Does The Party now get to pick someone? How about when approval ratings move back and forth between 48% and 52% over the course of just a few weeks, multiple times?

You've got that backwards. With the people that voted for them the bulk of the politicians are still happy. A recalled vote would simply deduct one from the result as set and would leave the rest of the results in place until the balance point was reached. That would not be something that would 'go back and forth', you could only do that once and when the withdrawn votes balance out (which typically for both parties would normally happen at roughly the same rate) would you call a new election.

So that would not happen nearly as often as you might think, and would likely require a fairly major turn of opinion before it would have any effect.

The two party system by the way is very much broken, as is the influence of money in American politics but that's a completely different - and local - affair.