For a long time I've had a dream that Leo could be used for data sets as 
large, say, as the human genome project. A few days ago I saw that this 
dream makes no sense whatever.

#1123 <https://github.com/leo-editor/leo-editor/issues/1123> discusses the 
dream, and why it will never happen.  Here are the conclusions from #1123:

There is a practical upper limit to the size of Leo outlines. This limit is 
imposed by assumptions underlying Leo, especially the assumption that 
searching all positions in an outline can be done in a reasonable amount of 
time. 

As a result, Leo will never *be* a database.

Leo's users easily *access *data from (possibly very large) databases, 
using python's sqlite3 module 
<https://docs.python.org/3/library/sqlite3.html>, or in other ways. Users 
can organize the results of db queries in the usual Leonine ways.

*Last thoughts*

The end of a nonsensical dream is always welcome.  It clears the way for 
better things.

I am confident of these conclusions. All questions and comments welcome.

Edward

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