What is time? There are many concepts but this seems to be the most understood definition of time:

Time is the indefinite continued progress of existence and events that occur in an apparently irreversible succession from the past, through the present, into the future.

We measure time backwards and forward but do not yet have the capability to go backwards or forward in time.

Time travel:

Time travel is the concept of movement between certain points in time, analogous to movement between different points in space by an object or a person, typically with the use of a hypothetical device known as a time machine. Time travel is a widely recognized concept in philosophy and fiction.

The reality of the present is what we deal with, though we can plan for the future, and take lessons from the past. Have you ever said or thought, “If I only knew then what I know now?”

If I could back up only 24 months in my life, back to when ALS symptoms began to appear, and knowing nothing could be done, I would have lived those 24 months differently. Certainly there would be far less effort trying to track down the disease and we would have saved a trip to the Mayo Clinic in Minnesota.

In the middle of winter.

We have not devoted much time to the thought of time travel, but certainly we would have devoted less time to the search for a disease and more time to the pleasure of living. As of now, 24 months later, there is little pleasure in living.

For me, sleep is the only escape from a nasty reality. Pleasant moments are few and far between. What I f I knew then what I know now? More intimacy, more family, more preparation. Now, the big sleep is dead ahead.

Literally.