  In the Dark Matter (DM) direct detection community, the absence of convincing
signals has become a "new normal" for decades. Among other possibilities, the
"new normal" might indicate that DM-matter interactions could generate not only
the hypothetical NR (Nuclear Recoil) events but also the ER (Electron Recoil)
ones, which have often been tagged as backgrounds historically. Further, we
argue that ER and NR-like DM signals could co-exist in a DM detector's same
dataset. So in total, there would be three scenarios we can search for DM
signals: (i) ER excess only, (ii) NR excess only, and (iii) ER and NR excesses
combined. To effectively identify any possible DM signal under the three
scenarios, a DM detector should (a) have the minimum ER and NR backgrounds and
(b) be capable of discriminating ER events from NR ones. Accordingly, we
introduce the newly established project, ALETHEIA, which implements liquid
helium-filled TPCs (Time Projection Chambers) in hunting for DM. Thanks to the
nearly single-digit number of ER and NR backgrounds on 1 ton*yr exposure,
presumably, the ALETHEIA detectors could identify any form of DM-induced excess
in its ROI (Research Of Interest). As far as we know, ALETHEIA is the first DM
direct detection experiment claiming such an inclusive search; conventional
detectors search DM mainly on the "ER excess only" and/or the "NR excess only"
channel, not the "ER and NR excesses combined" channel.
