Dynamic Years in Book Titles

Imagine you write a powerful, visionary science-fiction book called 2157 - Attack of the Andromedans! It's all about how in 150 years the Earth will be fighting a desperate intergalactic war with spaceships and aliens and light-speed weapons and all that.

But as the year 2157 approaches, it becomes clearer and clearer that none of this stuff is actually going to happen on time -- by the time that year is past, your book will look like nothing more than cheesy pulp sci-fi trash that was loaded with empty hype.

However, a variable title - registered with your publisher and copyright office, will enable the year in your title to change every year to always be 150 years in the future -- so your book never goes out of date!

If you feel that Earth is in fact getting closer to reaching the events described in your story, you can apply for a change of title to redefine the variable as "current year + 50" or something.