advantages and disadvantages of topics

well, first of all, the substitute never said anything about a blog entry... so i guess this is just going to be a shoot from the hip kind of entry since there was no forewarning or anything about this blog entry...
OK... i guess this is also going to be a bit of a venting entry so i apologize beforehand. it almost seems unfair for us to have to know what our topic(s) would be after only the first day or two talking about research papers. i know that this is probably just my opinion on the matter, but i have a really hard time coming up with ideas in the first place, so to require us to state what topics we are thinking of, as well as the disadvantages and/or advantages about each one seems a bit unfair to me. i know that this is to help get our creative juices flowing and get more ideas into our heads... but its still really hard for me to complete.So, I'm sorry but that's how I feel. i still feel that these are a good thing, even though its sometimes annoying.
OK. now to my actual blog: some possible ideas i guess would be to look into perhaps the origin of pianos and who first invented them. i could also go off into the early versions of pianos, like the harpsichord. i can see of some advantages because there are probably a lot of information in databases specifically in music, but some disadvantages might be that it might be hard to narrow to a specific topic. i could also maybe write about birth order. i could go off into this like talking about how certain children may show certain qualities or characteristics based off of the order in which they were born. i guess the same advantages and disadvantages would apply to this topic as well.