Contradictions in Ecclesiastes

Vexation is better than laughter

I said of laughter: It is praiseworthy.

which is understood to mean that laughter
is commendable. Likewise it is written

I said of laughter: It is praiseworthy

So I commended mirth.

And of mirth: What does it accomplish?

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Vexation is better than laughter
means the vexation of God toward the righteous
in this world is preferable to the laughter
which God laughs with the wicked in this
world by showering them with goodness.
I said of laughter: It is praiseworthy,
that is the laughter which God laughs
with the righteous in the World to Come.