Gasp! Are you referring to a lively marketplace of ideas and the intrinsic dynamics of competition within that marketplace?
Nobody said it's without cost to hold non-consensus views. The point is that those costs are incurred by the marketplace of ideas itself (people being "mean" to you, not the state beheading you) and that, in the long run, correct views become the consensus through winning such competitions over and over again.
There are alternative regimes where incorrect views can reign indefinitely because they choose to prevent people from criticizing each others' views.
Nobody said it's without cost to hold non-consensus views. The point is that those costs are incurred by the marketplace of ideas itself (people being "mean" to you, not the state beheading you) and that, in the long run, correct views become the consensus through winning such competitions over and over again.
There are alternative regimes where incorrect views can reign indefinitely because they choose to prevent people from criticizing each others' views.