BSL isn’t the thing that defines “appropriate units of risk”, that’s pathogen risk-group levels, and I agree that those are are problem because they focus on pathogen lists rather than actual risks. I actually think BSL are good at what they do, and the problem is regulation and oversight, which is patchy, as well as transparency, of which there is far too little. But those are issues with oversight, not with the types of biosecurity measure that are available.
BSL isn’t the thing that defines “appropriate units of risk”, that’s pathogen risk-group levels, and I agree that those are are problem because they focus on pathogen lists rather than actual risks. I actually think BSL are good at what they do, and the problem is regulation and oversight, which is patchy, as well as transparency, of which there is far too little. But those are issues with oversight, not with the types of biosecurity measure that are available.