The argument is not "too hard to draw a line, so we should not do it", it is "too hard to draw a line, which means it is arbitrary, lacking in legitimacy, and prone to corruption."
Engineers are a powerful class of people with the opportunity to swing their weight around on political issues like this. Some believe this opportunity should be seized for good, others believe it is just a soft form of tyranny, an undemocratic exercise of power. This is particularly true when in your own country, where you ought to use the power of the vote to make a difference.
Engineers are a powerful class of people with the opportunity to swing their weight around on political issues like this. Some believe this opportunity should be seized for good, others believe it is just a soft form of tyranny, an undemocratic exercise of power. This is particularly true when in your own country, where you ought to use the power of the vote to make a difference.