I am reading a book (Laudau and Lifshitz, Vol. 4, page 94) and it derived why spin-0 should obey Bose quantization and spin-1/2 should obey Fermi Quantization.
Then it says, all integral spin particles should obey Bose quantization and half-integral spin particles should obey Fermi quantization. The reason is integral spin is regarded as "composed" of even number of spin-1/2 particles while half-integral spin is "composed" of odd number of spin-1/2 particles. This is where I don't understand. Why "regarded as composed of even number of spin-1/2 particles" necessitates the use of Bose quantization?