Chapter 10, Part Laws. We don't need liftA2(concat).

In chapter 10 on part laws. there is a code that demonstrates "applicatives are close under composition".

const tOfM = compose(Task.of, Maybe.of);
liftA2(liftA2(concat), tOfM('Rainy Days and Mondays'), tOfM(' always get me down'));
// Task(Maybe(Rainy Days and Mondays always get me down))

I think we could remove liftA2 wrapper for concat function, It's useless. liftA2(concat, tOfM('Rainy Days and Mondays'), tOfM(' always get me down'));