It's what Life is. A puzzle. A puzzle that is constantly rearranging.
Every single being who touches your life in some way makes up their own individual little piece. Every single look, every single touch, every single word, everything that matters - every little thing becomes a tiny piece of the puzzle. And that piece is constant. It is always what it is. No other piece can come and take its place. There may be other similar pieces. There may be complimentary pieces. And new pieces are added, when new people are met, new relations are forged, new paths are taken and new lives are created, each piece finds its own niche. It will disturb the other pieces, they will be disturbed, rearranged. This puzzle is not a constant, only the pieces are. And even when millions of new pieces get added, every little one always holds its own. And if it is lost, a part goes out of your puzzle forever. A puzzle shaped blank is created in your universe. Where that piece was, now you stare at nothingness.
Is your puzzle complete? Where have your missing pieces gone?