Evidence for the intervention of advanced knowledge throughout human history

Evidence for the involvement of technologically advanced knowledge atpoints scattered throughout human history is easy to find, and we areready to tell you how.
You've discovered molecular structure, and can operate very good 3Dmodeling systems that demonstrate their structures and behaviorsperfectly. You've also developed sophisticated 2D schematica todescribe various aspects of molecular arrangement which are very muchrelevant to what you need to know to reveal our interventionthroughout your history.
The intervention you uncover will be undeniable by any government orother organization, and this is deliberate.
The most relevant thing about the relatively recent advancements inyour understanding of molecular structure involve some of the systemsof 2D schemata much more so than any realistic 3D model - we didn'tknow you'd become so efficient at 3D so quickly, and so while this maynot be the best way for the technology you've actually managed toevolve, it was nonetheless intentional, and in some ways increases thestrength of the evidence for the connection to your past and theknowledge of molecular structure you've picked up on so quickly today.Via this connection, which will become increasingly evident the moreit is studied (and some are, naturally, already doing this, we're justgiving you an additional little pointer here), the evidence willeventually become incontrovertible that advanced technology hasexisted outside of human society for millennia. Be it technologicalsociety from humanity's own descendants, or extraterrestrialtechnology, the concept needs to be absorbed before Earth can move onmuch further in the relationship between human society and the rest ofthe sentient universe.
Study your 2D schematic structures, you should be able to intuit whichones are most likely to be relevant. You will find many of thesestructures represented blatantly in one form or another in works ofart and science throughout history, even a little bit in the humanversion of prehistory (we remember when there were dinosaurs on yourworld, so yes, we've been here awhile - some of the very same mindswho are talking to you today, not just our ancestors - hope thatdoesn't freak anyone out who is capable of believing it ). Studyalso methods for representing musical notes in 2D ways - the 5-linesystem you have is completely off the mark for the purposes we'rediscussing here, but you can intuit other methods of 2D musicalrepresentation which will eventually lead you to the discovery of 2Dmusical representation systems that convert some ancient tunes andwritings into precise molecular structures in accordance with some ofthe 2D schematic systems you've already developed today.
Good luck, we wish only the best for you. This is the evidence you'vebeen waiting for, and as you figure it out, it -will- be undeniable.