BTW Likebox    was indefinitely blocked from Wikipedia Of course theres nothing wrong with you replying to him but theres no guarantee hell even read your message and he wont be able to reply to it Just letting you know  BTW if youre interested in helping with physics articles feel free to join WikiProject Physics Well take any help we can get so if you just feel like giving comments every now and then or just be availible for questions thats great And if you feel like editing articles as well even better      physics  books