There's many years of evidence of other systems and how they work and their trade-offs, so you can read about them. I haven't read about a successful anarchistic system so I asked for more info in case they had it.

Grand ideas about structuring a society based on a premise or an ideology or ideal end up being disasters when attempts are made to put them into practice.

It should be pretty simple to understand why: no one person or group of people can predict all eventualities or contingencies and it is not possible to design a system based on rigid ideals that can fail gracefully.

which is why education, to nudge people in the right direction is the only way to achieve lasting change