Two boats cross the start line together. Same speed. Same time.
Yet one may already be nearly 9 metres ahead!
How?

Two boats cross the start line together. Same speed. Same time.
Yet one may already be nearly 9 metres ahead!
How?
You had the perfect sailing plan.
Then another boat arrived.
That's the difference between strategy and tactics.
Which side of the river has more wind?
The obvious answer can be wrong.