We have very specific expertise in very specific domains. It'll be extremely unwise to think that being an expert in one domain can naturally lead to expertise in other domains. For example, you're an economic professor teaching in a local university. Due to the nature of your work, you have to be somewhat of an expert in economics. But to think that your expertise in economics extend to areas like financial investments is delusional. It's just not the same. I can even postulate that real life economics is also different from academic economics. Being an expert in academic economics also doesn't guarantee that you're an expert in real life economics. It's that specific. Case in point: Me. I was studying civil engineering back in NUS and had to do reservist during the school holidays. I must say I'm quite an expert in soil mechanics. There are numerous modules in ......