What does breakthrough improvement imply?
1) The process has been studied and some major improvement has resulted in large nonrandom improvement to the process.
2) The process has been studied but no major improvement has resulted in large nonrandom improvement to the process.
3) The process has not been studied and no major improvement has resulted in large nonrandom improvement to the process.
4) The process has not been studied but some major improvement has resulted in large nonrandom improvement to the process.