>What if the fence was put there for purposes of adverse posession?
Answering that question is the very reason for pausing to investigate its purpose. Questioning past purposes before reforming is not equivalent to "defending the fence absent any documentation." Your own characterization of this "mindless conservatism" is itself a straw-man of the behavior Chesterton's fence recommends.
The alternative is an endless cycle of deconstruction that impedes any progress, as every possible step or rational for it brings a possible mask to power. The Nietzschean project, though fun, has produced nothing besides criticism, and would never succeed in taking any kind of action about said fence.
Answering that question is the very reason for pausing to investigate its purpose. Questioning past purposes before reforming is not equivalent to "defending the fence absent any documentation." Your own characterization of this "mindless conservatism" is itself a straw-man of the behavior Chesterton's fence recommends.
The alternative is an endless cycle of deconstruction that impedes any progress, as every possible step or rational for it brings a possible mask to power. The Nietzschean project, though fun, has produced nothing besides criticism, and would never succeed in taking any kind of action about said fence.