> However, in pretty much any language, it's hard to avoid the user having some ability to fill out even "mandatory" fields in some invalid manner. I 100% agre

> However, in pretty much any language, it's hard to avoid the user having some ability to fill out even "mandatory" fields in some invalid manner. I 100% agree. It's just that go seems to make it easier to make invalid values than valid ones, because the programmer doesn't have to actually type the values that end up invalid.