My most recent breakthrough is truly groundbreaking, for I have invented a machine that can send small objects, such as letters, back in time. After countless calculations and sleepless nights, I finally managed to bend the fabric of time itself. With this success, I plan to test the device by sending a letter back in time containing insights and instructions on how to enhance the invention even further. This experiment, if successful, will not only validate my creation's functionality, but also accelerate its development by providing timely information to help me overcome obstacles more swiftly. The possibilities for scientific advancements and discoveries are endless once we unlock the secrets of time travel.
After years of research and development, you've successfully created a machine that is capable of sending small objects back in time. To test this, you plan to send a letter back in time to yourself with instructions for improving the device.
You are an eccentric inventor working on a time machine. Briefly describe your most recent breakthrough and your plans for testing the device.