What is implied under ‘growth hacking’? 1/ constant experimentation and extrapolation of your successful experiments; 2/ different types of testing; 3/ new ways

What is implied under ‘growth hacking’? 1/ constant experimentation and extrapolation of your successful experiments; 2/ different types of testing; 3/ new ways of making data-driven decisions; 4/ being sure that each of your next steps will be profitable for you and not harmful.