What a waste of fossil fuel energy! What a waste of laptop battery! It can be really hard to make software efficient, sometimes there are easy wins.. seems od

What a waste of fossil fuel energy! What a waste of laptop battery! It can be really hard to make software efficient, sometimes there are easy wins.. seems odd to not just do it. An insert or delete from (e.g.) a rope is very cheap and as they are immutable can make some other features very easy... saves copying megabytes...