Kids seeing breastfeeding

People on here always say they don't want their kids seeing someone breastfeed, I breastfeed my daughter and try to be discreet as possible but I wouldn't be uncomfortable if there was a situation I couldn't, I will feed my child when she's hungry no matter what, anyway I was round my mum friends house who has two young daughters, I went to feed where no one was in the living room, the two girls came in and the oldest 6/7 said its okay I know what boobies are for they make milk for the baby and stroked my daughters head, the youngest 4/5 said is she hungry? Did she have some biscuits? She didn't even realised and thought she was sleeping, the oldest said its okay if the youngest sees you feed she doesn't understand and will forget, the convocation was long but my point is if your worried about your kids seeing a woman breastfeed is they probably know more than you think or don't even realise what's going on at all, even if they are curious teach your child and make them knowledgeable and accepting they will probably forget anyway