Are dark thoughts true?
Yes, in the sense that exactly that information is in that ball of electricity.
No, in the sense that you are not doing that dark thing right now. It's a misalignment. In that sense, they are 100 percent false.
I don't think that some thoughts are true, and some aren't. I think that all thoughts hold some truth in them. I think the right approach is to look at every thought as something that has meaning.
They are a little bit true, or a lot not true, but they are not binary.
Does gravity exist at all times?
Yes and no.
Only when it springs into awareness. But on the other hand, it's always there. It's like your heartbeat. When you measure it, it's there—or it isn't—but the process is always there until it isn't.
When you measure a heartbeat, it is never "there" in any single, specific state. Yet over time, it is always there. The more closely you examine something, the less you may find.