These things sneak up on him for no reason, these flashes of irrational happiness. It's probably a vitamin deficiency.
In Margaret Atwood's novel "Oryx and Crake," the protagonist experiences unexpected moments of joy that seem to arise without cause. These instances of irrational happiness appear out of the blue and contribute to the complexity of his emotional state, suggesting that he grapples with deeper issues beneath the surface.
The character humorously speculates that such feelings might be due to a vitamin deficiency, revealing a sense of confusion about his happiness....