Irony is critical

Irony is acknowledged to be usually critical: the ironic speaker tends to exhibit an apparent positive attitude in order to communicate a negative valuation. The reverse is considered to be also possible though: the ironic speaker can praise by apparent blaming, although it seldom happens. This unbalance between the two sorts of ironic examples is the so-called asymmetry issue of irony. Here I shall deny the possibility of being ironic without criticizing - hence the asymmetry issue is an illusion. By claiming that irony is always critical I suggest an even stronger claim: criticism is what distinguishes irony from the similar phenomenon of metaphor.