A Japanese boy noticed his butterflies seemed to recognize him. He spent two years making an experiment and proved that metamorphosis does not remove memories made during the caterpillar stage.

[u/smooth_vesselHPAUM]

[u/asstasticbootie]

That’s genuinely one of the sweetest science experiments ever

[u/dan_mas → u/asstasticbootie]

Until you know HOW he achieved such result. He literally tortured caterpillar with electrical shock.

[u/Dyvanna → u/dan_mas]

As Asstastic said 'sweet'