Imagination empty of objective truth???
As an artist, I was put off by this sutra. I value my imagination. I am happy to have an active, creative imagination; it fuels my art. As a yoga teacher, imagination allows me to create a variety of classes. My imagination allows me to visualize the things I want to achieve in life. What could Patanjali mean?
I think what he is offering is not a judgement of imagination, but a pretty accurate definition of what it is.
The exact translation of the thread from Sanskrit to English contains the following words: sound word, language, knowledge, relying upon, empty of substance, and imagination.
How many times have you imagined a scenario that has caused great distraction and suffering, only to find out it was simply not true? So much time can be wasted imagining the worst has happened, and when worry sets in there can even be physical suffering. So although the imagination can be a fertile field for creativity, I think it is smart to realize that it is a figment of the mind and not based on a grounded reality. This knowledge will allow you to use imagination and also recognize it as the distraction and illusion it can also be.
I like how Patanjali starts the aphorism with sound word; it is like poetry or a song the mind can meander through. With your imaginings, the journey can be pleasant or painful, but in beginning to understand the workings of the mind, it is fair to say the imagination is without real meaning.