It has a lot of disadvantages: each one of these steps is extremely expensive, it's potentially dangerous and they have the interesting property that the step cannot be performed in anyone's backyard, which is a problem.
Are o grămadă de dezavantaje -- fiecare din aceşti paşi este extrem de costisitor, şi potenţial periculos şi au interesanta proprietate că pasul nu poate fi făcut în curtea oricui, ceea ce e o problemă.