Original sentence: While the 5 Whys is a powerful mnemonic for engineers or technically savvy individuals to help get to the true causes of problems, it has been criticized as being too basic a tool to analyze root causes to the depth that is needed to ensure that the causes are fixed
Edited sentence: While the 5 Whys is a powerful mnemonic for engineers or technically savvy individuals to help get to the true causes of problems, it has also been criticized as being too basic a tool to analyze root causes to the depth that is needed to ensure that the causes are fixed