Hey old man, I guess it hasn't occurred to you that a woman can do hard work, that a woman can have studied something for years or worked on something you don't know anything about. Maybe it also doesn't seem possible that she might have a greater aptitude for something, or that she has more education than you do. Maybe she has kids, and maybe she has or is currently struggling with her life by no fault of her own.
It is also possible that she is all of these things and she is younger than you.
Old man, if you decide to make a condescending remark or decide to give unwarranted advice to a woman, please know that she is her own person. She has the rest of her life ahead of her to become a thousand times better than you, and probably already is. Please know that your type is a dying breed and that people like you are not welcome on this planet anymore. Society will change with or without your help, so do us all a favour and just cut it out. —BeHave Or eLsE