If you're not sure whether your on the spectrum or not, you can potentially be extremely helpful as a 'bridge person.' If you think one or several people in your family may be autie, it can help you to understand more. And that part, in fact, done as a finesse, with a light touch, may provide you with social cover.
'Several members of my family are on the spectrum. [pause, half smile, bemused smile] And I may have a touch of it myself.'
'And that's okay, it truly is a difference, not a disability. It's just a different way of looking at the world.'
'And either way is perfectly okay.'
'People should be accepted for who they are, right?'
So, you're prepared to kind of ping-pong it back and forth, and further the education process in small and medium steps.
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And whether you should go or not, trust your gut. Don't overdepend on clunksville logic. Logic is just one tool. Trust yourself, does it feel like a positive open field? and either way is okay, and it's okay to make a mistake, too.