@bene Good, but state what your opinion is over the fact, rather then if they are good, but maybe why we should use them

@bene great thesis! make sure in your body you give examples of 'anything and everything' that stem cells help

@bene this is very contriversial and can lead to a good essay, but there are many people who won't want to read this after your thesis

@bene because they dont agree

@bene Try giving a brief reason why its not wrong to use them, as thats what the real contraversy on the topic is about.