On "pantographs," continued: I am using a Logitech V270 cordless optical mouse for bluetooth. It weights 323 g [2x AA batteries inclusive!, thank you very much]. A [manufacturer's description--but agreed:] 1000-dpi optical sensor offers incredibly smooth, precise tracking for maximum productivity while traveling [R.L.: and beyond].
The *look* is understatement for its class. Seen from the side, the V270 has the profile of a cat who is making a hump. And the nearly flat, tall, left and right sides of the V270 may disappoint you at first ... in case you were expecting something *cooler* for your eyes. In fact, the ergonomics of the Logitech V270 is VERY well designed. In another post I have said I believe to have regular sized hands. Okay, continuing: if I shape my hand like a cup, and lay it over a desk in pronation [palm under] position, the V270 fills PERFECTLY the hollow--provided I let the index- and the medium fingers a bit uplifted ... perhaps like the fangs, or the first pair of legs, of a funnel-web spider [atrax robustus]. The thumb on one side, and the annular plus the little finger on the other one, can now SUPERBLY make grip on the--oh wonder--flat, or nearly so, walls of the V270. While the index and the annular rest, arranged in a comfortable V-position, over two generously sized levers/*buttons*, with the wheel in the middle, and thankfully not interfering ... in case one doesn't, or can't use the wheel. Wrist and forearm lay agreeably, if not entirely relaxed, on the desk, virtually immobile: to let the V270 slide the mm or cm I need [ca 1 cm to move the cursor from left to right, maybe 8 mm from top to bottom], I merely flex, or extend, the thumb and the little finger in general. Voila', this ... arachnids-like arrangement of the hand--without the cord there is also little to make the device recall a *mouse* longer--is perhaps obeying to the .. *gradient* of the optimal use of the V270. Which I would dare to say is a reasonably representative contemporary *mouse*. Kudos to Logitech. I am using the V270 since a few months, and it is the best *mouse* I have used ever. (I am not saying that there can't be better mice around.) Wirth prefers mice with three buttons. I like ones with two ... in fact, I regard as not too challenging, from the perspective of the *motoric* [physiology], to push two buttons contemporaneously to emulate the third button. On the other hand, I ignore whether an *instructions statistic*, RISC's like, has been done for the need/use of buttons in mice: I very seldom need to emulate the use of the third button. Moreover, I am a *fan* of the Spanish architect Campo Baeza--a fellow from the *essentialist* movement [those of the slogan "more with less," in a humorous, more *positive*/*active* rephrasing/pun of the "less is more" of the *minimalist*]. About the weight: 323 g of the V270. You would not be able to make a difference, it's still to little compared with the total: weight of a loaded notebook bag with or without mouse, even not with a V270 ... you would not manage to discover if there is one inside the bag without looking; I guess not even be able to discriminate *differentially*: one bag in one hand, another one in the second. About the touchpad: I think that it makes sense--for *special situations* [let's recall that a notebook is more or less mobile]: mouse doesn't work for any reason, no space to use it, etc. And as longer it doesn't add significantly to the cost of the notebook. Example: Helsinki, January, snow, night. Tuomo has just lowered the [electric powered] window glass on his side in the car, when he discovers that, suddenly, he can't longer lift the window glass--for any any reasons: ice, electric motor problem, etc. A simple winder would now be VERY welcomed. Ditto for Roy in [fantasy selection:] Palembang. Just replace snow with rain [when it rains heavily in Sumatra, it comes down in one hour as much water than in two-three rainy months in Zurich]. Cheers, /Roy -- SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS buruk muka cermin dibelah SSSSS . s l a c k w a r e SSSSSS ugly face, the mirror is split [blaming SSSSS +------------ linux SSSSSS the wrong cause or creating a scapegoat] SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
