Since this is a gender issue it is a femisnist issue. In German there are suggestions in stead of using plural pronouns as singulars to switch completely to plurals. As Tdol mentioned he/she is cumbersome and additionally need more time and space if a text is long. In some Germans books the writers point out in the introduction that they stick to the male he but mean both. I don't think this is acceptable either. It makes women invisible again. Show me how you speak I tell you how you think.